TY  - JOUR
AU  - Gledović, Ana
AU  - Janošević-Ležaić, Aleksandra
AU  - Krstonošić, Veljko
AU  - Đoković, Jelena
AU  - Nikolić, Ines
AU  - Bajuk-Bogdanović, Danica
AU  - Antić-Stanković, Jelena
AU  - Ranđelović, Danijela
AU  - Savić, Sanela M.
AU  - Filipović, Mila
AU  - Tamburić, Slobodanka
AU  - Savić, Snežana
PY  - 2020
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3581
AB  - Considering a growing demand for medicinal/cosmetic products with natural actives, this study focuses on the low-energy nanoemulsions (LE-NEs) prepared via the Phase inversion composition (PIC) method at room temperature as potential carriers for natural oil. Four different red raspberry seed oils (ROs) were tested, as follows: cold-pressed vs. CO2- extracted, organic vs. non-organic, refined vs. unrefined. The oil phase was optimized with Tocopheryl acetate and Isostearyl isostearate, while water phase was adjusted with either glycerol or an antioxidant hydro-glycolic extract. This study has used a combined approach to formulation development, employing both conventional methods (pseudo-ternary phase diagram - PTPD, electrical conductivity, particle size measurements, microscopical analysis, and rheological measurements) and the methods novel to this area, such as textural analysis and Raman spectroscopy. Raman spectroscopy has detected fine differences in chemical composition among ROs, and it detected the interactions within nanoemulsions. It was shown that the cold-pressed, unrefined, organic grade oil (RO2) with 6.62% saturated fatty acids and 92.25% unsaturated fatty acids, was optimal for the LE-NEs. Textural analysis confirmed the existence of cubic gel-like phase as a crucial step in the formation of stable RO2-loaded LE-NEs, with droplets in the narrow nano-range (125 to 135 nm; PDI ≤ 0.1). The DPPH test in methanol and ABTS in aqueous medium have revealed a synergistic free radical scavenging effect between lipophilic and hydrophilic antioxidants in LE-NEs. The nanoemulsion carrier has improved the biological effect of raw materials on HeLa cervical adenocarcinoma cells, while exhibiting good safety profile, as confirmed on MRC-5 normal human lung fibroblasts. Overall, this study has shown that low-energy nanoemulsions present very promising carriers for topical delivery of natural bioactives. Raman spectroscopy and textural analysis have proven to be a useful addition to the arsenal of methods used in the formulation and characterization of nanoemulsion systems.
PB  - Public Library of Science
T2  - PLoS ONE
T1  - Low-energy nanoemulsions as carriers for red raspberry seed oil: Formulation approach based on Raman spectroscopy and textural analysis, physicochemical properties, stability and in vitro antioxidant/ biological activity
VL  - 15
IS  - 4
DO  - 10.1371/journal.pone.0230993
ER  - 

@article{
author = "Gledović, Ana and Janošević-Ležaić, Aleksandra and Krstonošić, Veljko and Đoković, Jelena and Nikolić, Ines and Bajuk-Bogdanović, Danica and Antić-Stanković, Jelena and Ranđelović, Danijela and Savić, Sanela M. and Filipović, Mila and Tamburić, Slobodanka and Savić, Snežana",
year = "2020",
abstract = "Considering a growing demand for medicinal/cosmetic products with natural actives, this study focuses on the low-energy nanoemulsions (LE-NEs) prepared via the Phase inversion composition (PIC) method at room temperature as potential carriers for natural oil. Four different red raspberry seed oils (ROs) were tested, as follows: cold-pressed vs. CO2- extracted, organic vs. non-organic, refined vs. unrefined. The oil phase was optimized with Tocopheryl acetate and Isostearyl isostearate, while water phase was adjusted with either glycerol or an antioxidant hydro-glycolic extract. This study has used a combined approach to formulation development, employing both conventional methods (pseudo-ternary phase diagram - PTPD, electrical conductivity, particle size measurements, microscopical analysis, and rheological measurements) and the methods novel to this area, such as textural analysis and Raman spectroscopy. Raman spectroscopy has detected fine differences in chemical composition among ROs, and it detected the interactions within nanoemulsions. It was shown that the cold-pressed, unrefined, organic grade oil (RO2) with 6.62% saturated fatty acids and 92.25% unsaturated fatty acids, was optimal for the LE-NEs. Textural analysis confirmed the existence of cubic gel-like phase as a crucial step in the formation of stable RO2-loaded LE-NEs, with droplets in the narrow nano-range (125 to 135 nm; PDI ≤ 0.1). The DPPH test in methanol and ABTS in aqueous medium have revealed a synergistic free radical scavenging effect between lipophilic and hydrophilic antioxidants in LE-NEs. The nanoemulsion carrier has improved the biological effect of raw materials on HeLa cervical adenocarcinoma cells, while exhibiting good safety profile, as confirmed on MRC-5 normal human lung fibroblasts. Overall, this study has shown that low-energy nanoemulsions present very promising carriers for topical delivery of natural bioactives. Raman spectroscopy and textural analysis have proven to be a useful addition to the arsenal of methods used in the formulation and characterization of nanoemulsion systems.",
publisher = "Public Library of Science",
journal = "PLoS ONE",
title = "Low-energy nanoemulsions as carriers for red raspberry seed oil: Formulation approach based on Raman spectroscopy and textural analysis, physicochemical properties, stability and in vitro antioxidant/ biological activity",
volume = "15",
number = "4",
doi = "10.1371/journal.pone.0230993"
}

Gledović, A., Janošević-Ležaić, A., Krstonošić, V., Đoković, J., Nikolić, I., Bajuk-Bogdanović, D., Antić-Stanković, J., Ranđelović, D., Savić, S. M., Filipović, M., Tamburić, S.,& Savić, S.. (2020). Low-energy nanoemulsions as carriers for red raspberry seed oil: Formulation approach based on Raman spectroscopy and textural analysis, physicochemical properties, stability and in vitro antioxidant/ biological activity. in PLoS ONE
Public Library of Science., 15(4).
https://doi.org/10.1371/journal.pone.0230993

Gledović A, Janošević-Ležaić A, Krstonošić V, Đoković J, Nikolić I, Bajuk-Bogdanović D, Antić-Stanković J, Ranđelović D, Savić SM, Filipović M, Tamburić S, Savić S. Low-energy nanoemulsions as carriers for red raspberry seed oil: Formulation approach based on Raman spectroscopy and textural analysis, physicochemical properties, stability and in vitro antioxidant/ biological activity. in PLoS ONE. 2020;15(4).
doi:10.1371/journal.pone.0230993 .

Gledović, Ana, Janošević-Ležaić, Aleksandra, Krstonošić, Veljko, Đoković, Jelena, Nikolić, Ines, Bajuk-Bogdanović, Danica, Antić-Stanković, Jelena, Ranđelović, Danijela, Savić, Sanela M., Filipović, Mila, Tamburić, Slobodanka, Savić, Snežana, "Low-energy nanoemulsions as carriers for red raspberry seed oil: Formulation approach based on Raman spectroscopy and textural analysis, physicochemical properties, stability and in vitro antioxidant/ biological activity" in PLoS ONE, 15, no. 4 (2020),
https://doi.org/10.1371/journal.pone.0230993 . .

TY  - JOUR
AU  - Jovanović, Zoran
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica
AU  - Jovanović, Sonja
AU  - Marković, S.
AU  - Vujković, Milica
AU  - Kovač, Janez
AU  - Vengust, Damjan
AU  - Uskoković-Marković, Snežana
AU  - Holclajtner-Antunović, Ivanka
PY  - 2020
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3452
AB  - In the present study we investigated the interaction between 12-tungstophosphoric acid (WPA) and graphene oxide (GO) in their nanocomposite by utilizing the loading of WPA as an intrinsic parameter for interaction tuning. The Fourier-transform infrared spectroscopy, temperature-programmed desorption, X-ray photoelectron spectroscopy, zeta-potential measurements, thermogravimetric analysis, X-ray diffraction, Raman spectroscopy and transmission electron microscopy methods revealed that ∼5–13 wt% of WPA represents critical loading that separates two distinct contributions to GO-WPA interaction. This was explained by the self-limiting nature of GO-WPA interaction, initially controlled by high dispersion of WPA on GO (up to 13 wt%), that is eventually overpowered by WPA-WPA interaction as loading increases. As a result, the WPA agglomerates are being formed because of which the hybrid character of the nanocomposite diminishes, i.e., the properties of independent components start to be manifested to greater extent. The obtained results provide an important framework for considering possible outcomes in other 2D-0D systems, whose interaction is relevant both from fundamental and applicative point of view. Thus, the GO/WPA nanocomposite illustrates how the interactions between the components can be used for tuning the properties of nanocomposite as a whole.
PB  - Elsevier
T2  - Carbon
T1  - Self-limiting interactions in 2D–0D system: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite
VL  - 156
SP  - 166
EP  - 178
DO  - 10.1016/j.carbon.2019.09.072
ER  - 

@article{
author = "Jovanović, Zoran and Mravik, Željko and Bajuk-Bogdanović, Danica and Jovanović, Sonja and Marković, S. and Vujković, Milica and Kovač, Janez and Vengust, Damjan and Uskoković-Marković, Snežana and Holclajtner-Antunović, Ivanka",
year = "2020",
abstract = "In the present study we investigated the interaction between 12-tungstophosphoric acid (WPA) and graphene oxide (GO) in their nanocomposite by utilizing the loading of WPA as an intrinsic parameter for interaction tuning. The Fourier-transform infrared spectroscopy, temperature-programmed desorption, X-ray photoelectron spectroscopy, zeta-potential measurements, thermogravimetric analysis, X-ray diffraction, Raman spectroscopy and transmission electron microscopy methods revealed that ∼5–13 wt% of WPA represents critical loading that separates two distinct contributions to GO-WPA interaction. This was explained by the self-limiting nature of GO-WPA interaction, initially controlled by high dispersion of WPA on GO (up to 13 wt%), that is eventually overpowered by WPA-WPA interaction as loading increases. As a result, the WPA agglomerates are being formed because of which the hybrid character of the nanocomposite diminishes, i.e., the properties of independent components start to be manifested to greater extent. The obtained results provide an important framework for considering possible outcomes in other 2D-0D systems, whose interaction is relevant both from fundamental and applicative point of view. Thus, the GO/WPA nanocomposite illustrates how the interactions between the components can be used for tuning the properties of nanocomposite as a whole.",
publisher = "Elsevier",
journal = "Carbon",
title = "Self-limiting interactions in 2D–0D system: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite",
volume = "156",
pages = "166-178",
doi = "10.1016/j.carbon.2019.09.072"
}

Jovanović, Z., Mravik, Ž., Bajuk-Bogdanović, D., Jovanović, S., Marković, S., Vujković, M., Kovač, J., Vengust, D., Uskoković-Marković, S.,& Holclajtner-Antunović, I.. (2020). Self-limiting interactions in 2D–0D system: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite. in Carbon
Elsevier., 156, 166-178.
https://doi.org/10.1016/j.carbon.2019.09.072

Jovanović Z, Mravik Ž, Bajuk-Bogdanović D, Jovanović S, Marković S, Vujković M, Kovač J, Vengust D, Uskoković-Marković S, Holclajtner-Antunović I. Self-limiting interactions in 2D–0D system: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite. in Carbon. 2020;156:166-178.
doi:10.1016/j.carbon.2019.09.072 .

Jovanović, Zoran, Mravik, Željko, Bajuk-Bogdanović, Danica, Jovanović, Sonja, Marković, S., Vujković, Milica, Kovač, Janez, Vengust, Damjan, Uskoković-Marković, Snežana, Holclajtner-Antunović, Ivanka, "Self-limiting interactions in 2D–0D system: A case study of graphene oxide and 12-tungstophosphoric acid nanocomposite" in Carbon, 156 (2020):166-178,
https://doi.org/10.1016/j.carbon.2019.09.072 . .

TY  - JOUR
AU  - Pavun, Leposava
AU  - Uskoković-Marković, Snežana
PY  - 2019
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5062
AB  - Hesperidin is the flavonoid heteroside most found in citrus species, such
as grapefruit, lemon and orange. It is applied in the treatment of numerous
cardiovascular diseases, with many products containing hesperidin in
combination with other flavonoid heterosides or vitamin C. The aim of this
study was to develop and validate a simple, rapid and sensitive and lowcost
method for determination of hesperidin in tablets and orange juices.
The developed spectrophotometric method is based on the formation of
the Zn(II)-hesperidin complex in 70 v/v% methanol at pH 3.12, with max of
absorption at λmax= 283 nm. The method of variation of equimolar solutions
confirmed the stoichiometry of the complex as hesperidin: zinc= 2:1.
The stability constant of the complex was obtained by the Bjerrum method
and it is logβ2 = 17.01 at pH 3.12. Linearity range for the developed method
was defined as 0.61-7.32 μg/mL, (confirmed by coefficient of determination,
r2 = 0.9882), while limits of detection and quantification were calculated
as LOD = 0.15 μg/mL and LOQ = 0.45 μg/mL. Fairly high precision of the
method is indicated by low values of CV, varying in the range 0.26-1.23%.
The proposed method fulfills all aimed requirements, and it was successfully
applied for determination of hesperidin in tablets with recovery value 92.2
% and commercially available orange juices.
AB  - Hesperidin je flavonoidni heterozid koji se najčešće nalazi u citrusnim vr-
stama, kao što su grejpfrut, limun i pomorandža. Primenjuje se u lečenju
brojnih kardiovaskularnih bolesti, sa mnogim proizvodima koji sadrže hes-
peridin u kombinaciji sa drugim flavonoidnim heterozidima ili vitaminom
C. Cilj ove studije je razvijanje i primena jednostavne, brze i osetljive, a pri
tome pristupačne metode za određivanje hesperidina u tabletama i sokovi-
ma od pomorandže. Razvijena spektrofotometrijska metoda zasniva se na
formiranju Zn(II)-hesperidin kompleksa u 70 v/v% metanolu pri pH 3,12, sa
maksimumom absorbancije na λ max= 283 nm. Metodom varijacije ekvimo-
larnih rastvora utvrđena je stehiometrija kompleksa hesperidin: cink = 2:1.
Konstanta stabilnosti kompleksa dobijena Bjerumovom metodom iznosi
logβ2 = 17,01 pri pH 3,12. Linearnost razvijene metode utvrđena je u oblasti
0,61 - 7,32 μg/mL, (potvrđeno koeficijentom određivanja, r2 = 0,9882), dok
su izračunati limiti detekcije i kvantifikacije LOD = 0,15 μg/mL i LOQ = 0,45
μg/mL. Na visoku preciznost metode ukazuju niske vrednosti koeficijenata
varijacije (CV je u oblasti 0,26 – 1,23 %). Predložena metoda ispunjava sve
postavljene zahteve i sa uspehom je primenjena za određivanje hesperidina
u tabletama uz recovery vrednost 92,2 % i komercijalno dostupnim sokovi-
ma od pomorandže.
PB  - Društvo za ishranu Srbije, Beograd
T2  - Hrana i ishrana
T1  - Spectrophotometric determination of hesperidin in supplements and orange juices
T1  - Spektrofotometrijsko određivanje hesperidina u suplementima i
sokovima od pomorandže
VL  - 60
IS  - 1
SP  - 18
EP  - 23
DO  - 10.5937/HraIsh1901018P
ER  - 

@article{
author = "Pavun, Leposava and Uskoković-Marković, Snežana",
year = "2019",
abstract = "Hesperidin is the flavonoid heteroside most found in citrus species, such
as grapefruit, lemon and orange. It is applied in the treatment of numerous
cardiovascular diseases, with many products containing hesperidin in
combination with other flavonoid heterosides or vitamin C. The aim of this
study was to develop and validate a simple, rapid and sensitive and lowcost
method for determination of hesperidin in tablets and orange juices.
The developed spectrophotometric method is based on the formation of
the Zn(II)-hesperidin complex in 70 v/v% methanol at pH 3.12, with max of
absorption at λmax= 283 nm. The method of variation of equimolar solutions
confirmed the stoichiometry of the complex as hesperidin: zinc= 2:1.
The stability constant of the complex was obtained by the Bjerrum method
and it is logβ2 = 17.01 at pH 3.12. Linearity range for the developed method
was defined as 0.61-7.32 μg/mL, (confirmed by coefficient of determination,
r2 = 0.9882), while limits of detection and quantification were calculated
as LOD = 0.15 μg/mL and LOQ = 0.45 μg/mL. Fairly high precision of the
method is indicated by low values of CV, varying in the range 0.26-1.23%.
The proposed method fulfills all aimed requirements, and it was successfully
applied for determination of hesperidin in tablets with recovery value 92.2
% and commercially available orange juices., Hesperidin je flavonoidni heterozid koji se najčešće nalazi u citrusnim vr-
stama, kao što su grejpfrut, limun i pomorandža. Primenjuje se u lečenju
brojnih kardiovaskularnih bolesti, sa mnogim proizvodima koji sadrže hes-
peridin u kombinaciji sa drugim flavonoidnim heterozidima ili vitaminom
C. Cilj ove studije je razvijanje i primena jednostavne, brze i osetljive, a pri
tome pristupačne metode za određivanje hesperidina u tabletama i sokovi-
ma od pomorandže. Razvijena spektrofotometrijska metoda zasniva se na
formiranju Zn(II)-hesperidin kompleksa u 70 v/v% metanolu pri pH 3,12, sa
maksimumom absorbancije na λ max= 283 nm. Metodom varijacije ekvimo-
larnih rastvora utvrđena je stehiometrija kompleksa hesperidin: cink = 2:1.
Konstanta stabilnosti kompleksa dobijena Bjerumovom metodom iznosi
logβ2 = 17,01 pri pH 3,12. Linearnost razvijene metode utvrđena je u oblasti
0,61 - 7,32 μg/mL, (potvrđeno koeficijentom određivanja, r2 = 0,9882), dok
su izračunati limiti detekcije i kvantifikacije LOD = 0,15 μg/mL i LOQ = 0,45
μg/mL. Na visoku preciznost metode ukazuju niske vrednosti koeficijenata
varijacije (CV je u oblasti 0,26 – 1,23 %). Predložena metoda ispunjava sve
postavljene zahteve i sa uspehom je primenjena za određivanje hesperidina
u tabletama uz recovery vrednost 92,2 % i komercijalno dostupnim sokovi-
ma od pomorandže.",
publisher = "Društvo za ishranu Srbije, Beograd",
journal = "Hrana i ishrana",
title = "Spectrophotometric determination of hesperidin in supplements and orange juices, Spektrofotometrijsko određivanje hesperidina u suplementima i
sokovima od pomorandže",
volume = "60",
number = "1",
pages = "18-23",
doi = "10.5937/HraIsh1901018P"
}

Pavun, L.,& Uskoković-Marković, S.. (2019). Spectrophotometric determination of hesperidin in supplements and orange juices. in Hrana i ishrana
Društvo za ishranu Srbije, Beograd., 60(1), 18-23.
https://doi.org/10.5937/HraIsh1901018P

Pavun L, Uskoković-Marković S. Spectrophotometric determination of hesperidin in supplements and orange juices. in Hrana i ishrana. 2019;60(1):18-23.
doi:10.5937/HraIsh1901018P .

Pavun, Leposava, Uskoković-Marković, Snežana, "Spectrophotometric determination of hesperidin in supplements and orange juices" in Hrana i ishrana, 60, no. 1 (2019):18-23,
https://doi.org/10.5937/HraIsh1901018P . .

TY  - JOUR
AU  - Jevremović, Anka
AU  - Bober, Patrycja
AU  - Mičušík, Matej
AU  - Kuliček, Jaroslav
AU  - Acharya, Udit
AU  - Pfleger, Jiří
AU  - Milojević-Rakić, Maja
AU  - Krajišnik, Danina
AU  - Trchova, Miroslava
AU  - Stejskal, Jaroslav
AU  - Ćirić-Marjanović, Gordana
PY  - 2019
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3248
AB  - Composite materials of BEA zeolite and polyaniline (PANI) were prepared by the chemical oxidative polymerization of aniline in the presence of zeolite in water (without added acid) and in an aqueous solution of sulfuric acid, using ammonium peroxydisulfate as an oxidant. Protonated (as-synthesized) and deprotonated forms of the composites and pristine PANIs were characterized by scanning electron microscopy, conductivity and zeta potential measurements, FTIR, Raman and XPS spectroscopies, and thermogravimetric analysis. Adsorption properties of synthesized materials for removal of nicosulfuron pesticide from aqueous solutions were studied, using HPLC technique. The obtained adsorption isotherms were analyzed using Freundlich and Langmuir-Freundlich equations. Protonated PANI/BEA composites showed excellent adsorption capacity (18.4–25.4 mg g−1), that was higher than the adsorption capacity of pristine BEA zeolite (18.2 mg g−1) but slightly less than neat PANI. Among PANIs, the highest adsorption capacity of 29.8 mg g−1 of adsorbent was found for protonated PANI prepared in sulfuric acid solution. Analysis of adsorption isotherms revealed high degree of surface homogeneity for all prepared composite materials and PANIs. Proposed mechanism for enhanced adsorption of nicosulfuron on protonated composites is based on hydrogen bonding of nicosulfuron O- and N-containing groups with bridging hydroxyls of BEA zeolite and –NH/ = NH+/−NH•+ groups in protonated emeraldine salt form of PANI chains (PANI-ES), accompanied with electrostatic attractive interaction between anionic nicosulfuron species and positive = NH+/−NH•+ groups in bipolaron/polaron containing structures of PANI-ES. Presence of protons in bridging hydroxyls in BEA zeolite and in protonated PANI-ES chains is essential for excellent adsorption of nicosulfuron via hydrogen bonding on all protonated composite samples. In support of this interpretation, deprotonated PANI/BEA composites and deprotonated PANIs showed significantly lower adsorption capacities (in the range 5.5–13.0 mg g−1) compared to those of their protonated counterparts.
PB  - Elsevier B.V.
T2  - Microporous and Mesoporous Materials
T1  - Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption
SP  - 234
EP  - 245
DO  - 10.1016/j.micromeso.2019.06.006
ER  - 

@article{
author = "Jevremović, Anka and Bober, Patrycja and Mičušík, Matej and Kuliček, Jaroslav and Acharya, Udit and Pfleger, Jiří and Milojević-Rakić, Maja and Krajišnik, Danina and Trchova, Miroslava and Stejskal, Jaroslav and Ćirić-Marjanović, Gordana",
year = "2019",
abstract = "Composite materials of BEA zeolite and polyaniline (PANI) were prepared by the chemical oxidative polymerization of aniline in the presence of zeolite in water (without added acid) and in an aqueous solution of sulfuric acid, using ammonium peroxydisulfate as an oxidant. Protonated (as-synthesized) and deprotonated forms of the composites and pristine PANIs were characterized by scanning electron microscopy, conductivity and zeta potential measurements, FTIR, Raman and XPS spectroscopies, and thermogravimetric analysis. Adsorption properties of synthesized materials for removal of nicosulfuron pesticide from aqueous solutions were studied, using HPLC technique. The obtained adsorption isotherms were analyzed using Freundlich and Langmuir-Freundlich equations. Protonated PANI/BEA composites showed excellent adsorption capacity (18.4–25.4 mg g−1), that was higher than the adsorption capacity of pristine BEA zeolite (18.2 mg g−1) but slightly less than neat PANI. Among PANIs, the highest adsorption capacity of 29.8 mg g−1 of adsorbent was found for protonated PANI prepared in sulfuric acid solution. Analysis of adsorption isotherms revealed high degree of surface homogeneity for all prepared composite materials and PANIs. Proposed mechanism for enhanced adsorption of nicosulfuron on protonated composites is based on hydrogen bonding of nicosulfuron O- and N-containing groups with bridging hydroxyls of BEA zeolite and –NH/ = NH+/−NH•+ groups in protonated emeraldine salt form of PANI chains (PANI-ES), accompanied with electrostatic attractive interaction between anionic nicosulfuron species and positive = NH+/−NH•+ groups in bipolaron/polaron containing structures of PANI-ES. Presence of protons in bridging hydroxyls in BEA zeolite and in protonated PANI-ES chains is essential for excellent adsorption of nicosulfuron via hydrogen bonding on all protonated composite samples. In support of this interpretation, deprotonated PANI/BEA composites and deprotonated PANIs showed significantly lower adsorption capacities (in the range 5.5–13.0 mg g−1) compared to those of their protonated counterparts.",
publisher = "Elsevier B.V.",
journal = "Microporous and Mesoporous Materials",
title = "Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption",
pages = "234-245",
doi = "10.1016/j.micromeso.2019.06.006"
}

Jevremović, A., Bober, P., Mičušík, M., Kuliček, J., Acharya, U., Pfleger, J., Milojević-Rakić, M., Krajišnik, D., Trchova, M., Stejskal, J.,& Ćirić-Marjanović, G.. (2019). Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption. in Microporous and Mesoporous Materials
Elsevier B.V.., 234-245.
https://doi.org/10.1016/j.micromeso.2019.06.006

Jevremović A, Bober P, Mičušík M, Kuliček J, Acharya U, Pfleger J, Milojević-Rakić M, Krajišnik D, Trchova M, Stejskal J, Ćirić-Marjanović G. Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption. in Microporous and Mesoporous Materials. 2019;:234-245.
doi:10.1016/j.micromeso.2019.06.006 .

Jevremović, Anka, Bober, Patrycja, Mičušík, Matej, Kuliček, Jaroslav, Acharya, Udit, Pfleger, Jiří, Milojević-Rakić, Maja, Krajišnik, Danina, Trchova, Miroslava, Stejskal, Jaroslav, Ćirić-Marjanović, Gordana, "Synthesis and characterization of polyaniline/BEA zeolite composites and their application in nicosulfuron adsorption" in Microporous and Mesoporous Materials (2019):234-245,
https://doi.org/10.1016/j.micromeso.2019.06.006 . .

TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka
AU  - Uskoković-Marković, Snežana
AU  - Popa, Alexandru
AU  - Jevremović, A
AU  - Nedić-Vasiljević, Bojana
AU  - Milojević-Rakić, Maja
AU  - Bajuk-Bogdanović, Danica
PY  - 2019
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3280
AB  - The current study reports the synthesis, characterization and catalytic activity of tungstophosphoric acid (HPW) and its potassium salts (KH2PW and K3PW) supported on activated carbon (AC). Because potassium salts of tungstophosphoric acid are insoluble, the carbon supported KH2PW and K3PW were prepared by a two step impregnation method. The synthesized catalysts were characterized by various physicochemical methods such as Fourier transform infrared and Raman spectroscopy, differential thermal analysis, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and nitrogen physisorption. It is observed that all active phases keep their Keggin-type structure after being supported on AC, while their specific surface area is considerably increased by deposition on this porous substrate. The results also indicated that the synthesized materials retained the morphology specific for the support as well as its thermal properties. The adsorption behaviour of the nanocomposites towards nicosulfuron pesticide was found to be particulary good and even slightly improved when compared to pure activated carbon. The catalytic activity of the prepared catalysts was probed for the vapor phase dehydration of ethanol at 300 °C. The conversion of ethanol and selectivity toward ethylene and diethyl ether of nanocomposites were compared with the values of bare HPW, KH2PW and K3PW. Results revealed that catalytic activity depends on the catalyst type and active phase loading. The conversion over unsupported catalysts decreased by increasing the cation content per Keggin unit. The nanocomposites with 30 wt% loading of HPW achieved the best conversion of nearly 100% and the highest and stable selectivity toward ethylene. The catalytic activity of nanocomposites with acidic KH2PW showed lower catalytic activity of about 70%, while the nanocomposites of neutral K3PW and AC showed negligible activity.
PB  - Springer Netherlands
T2  - Records of Natural Products
T1  - Ethanol dehydration over Keggin type tungstophosphoric acid and its potassium salts supported on carbon
DO  - 10.1007/s11144-019-01625-6
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka and Uskoković-Marković, Snežana and Popa, Alexandru and Jevremović, A and Nedić-Vasiljević, Bojana and Milojević-Rakić, Maja and Bajuk-Bogdanović, Danica",
year = "2019",
abstract = "The current study reports the synthesis, characterization and catalytic activity of tungstophosphoric acid (HPW) and its potassium salts (KH2PW and K3PW) supported on activated carbon (AC). Because potassium salts of tungstophosphoric acid are insoluble, the carbon supported KH2PW and K3PW were prepared by a two step impregnation method. The synthesized catalysts were characterized by various physicochemical methods such as Fourier transform infrared and Raman spectroscopy, differential thermal analysis, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and nitrogen physisorption. It is observed that all active phases keep their Keggin-type structure after being supported on AC, while their specific surface area is considerably increased by deposition on this porous substrate. The results also indicated that the synthesized materials retained the morphology specific for the support as well as its thermal properties. The adsorption behaviour of the nanocomposites towards nicosulfuron pesticide was found to be particulary good and even slightly improved when compared to pure activated carbon. The catalytic activity of the prepared catalysts was probed for the vapor phase dehydration of ethanol at 300 °C. The conversion of ethanol and selectivity toward ethylene and diethyl ether of nanocomposites were compared with the values of bare HPW, KH2PW and K3PW. Results revealed that catalytic activity depends on the catalyst type and active phase loading. The conversion over unsupported catalysts decreased by increasing the cation content per Keggin unit. The nanocomposites with 30 wt% loading of HPW achieved the best conversion of nearly 100% and the highest and stable selectivity toward ethylene. The catalytic activity of nanocomposites with acidic KH2PW showed lower catalytic activity of about 70%, while the nanocomposites of neutral K3PW and AC showed negligible activity.",
publisher = "Springer Netherlands",
journal = "Records of Natural Products",
title = "Ethanol dehydration over Keggin type tungstophosphoric acid and its potassium salts supported on carbon",
doi = "10.1007/s11144-019-01625-6"
}

Holclajtner-Antunović, I., Uskoković-Marković, S., Popa, A., Jevremović, A., Nedić-Vasiljević, B., Milojević-Rakić, M.,& Bajuk-Bogdanović, D.. (2019). Ethanol dehydration over Keggin type tungstophosphoric acid and its potassium salts supported on carbon. in Records of Natural Products
Springer Netherlands..
https://doi.org/10.1007/s11144-019-01625-6

Holclajtner-Antunović I, Uskoković-Marković S, Popa A, Jevremović A, Nedić-Vasiljević B, Milojević-Rakić M, Bajuk-Bogdanović D. Ethanol dehydration over Keggin type tungstophosphoric acid and its potassium salts supported on carbon. in Records of Natural Products. 2019;.
doi:10.1007/s11144-019-01625-6 .

Holclajtner-Antunović, Ivanka, Uskoković-Marković, Snežana, Popa, Alexandru, Jevremović, A, Nedić-Vasiljević, Bojana, Milojević-Rakić, Maja, Bajuk-Bogdanović, Danica, "Ethanol dehydration over Keggin type tungstophosphoric acid and its potassium salts supported on carbon" in Records of Natural Products (2019),
https://doi.org/10.1007/s11144-019-01625-6 . .

TY  - JOUR
AU  - Bajuk-Bogdanovic, Danica
AU  - Holclajtner-Antunović, Ivanka
AU  - Jovanović, Zoran
AU  - Mravik, Željko
AU  - Krstić, Jugoslav
AU  - Uskoković-Marković, Snežana
AU  - Vujkovic, Milica
PY  - 2019
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3455
AB  - The synergistic effects between two Keggin-type heteropoly acids (HPAs) and carbon surface were examined and elucidated. An improved high rate capability (and potential high capacitor electrode for supercapacitors) of the hybrid materials, obtained by anchoring of α-dodecamolybdophosphoric (MoPA), α-dodecatungstophosphoric (WPA), and their mixture to activated carbon (AC), was achieved through the different mechanism of interaction. In order to elaborate this, a detailed analysis of AC-HPA composites has been performed by scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, temperature-programmed desorption (TPD), Fourier-transform infrared spectroscopy (FTIR), micro Raman spectroscopy, and zeta potential measurements. The zeta potential measurements revealed positive charge of carbon surface thus indicating attractive interactions with negatively charged Keggin anion. The surface analysis has shown that WPA spontaneously reduces the carbon surface, while interaction with MoPA leads to its oxidation. As the consequence of the tailoring of the functional groups at carbon surface through HPAs’ action, the distortion of cyclic voltammograms (CVs) decreased in the following order: AC-MoPA, AC-MoPA-WPA, and AC-WPA. A prominent rectangular shape of AC-WPA, even at an extremely high scan rate of 400 mVs−1, was measured, which is rarely demonstrated for carbon-based composites. By applying the theory of electrode potentials, the HPA-AC synergistic effect was explained and discussed in terms of charge storage improvement of HPA-modified carbon.
PB  - Springer
T2  - Journal of Solid State Electrochemistry
T1  - Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?
VL  - 23
IS  - 9
SP  - 2747
EP  - 2758
DO  - 10.1007/s10008-019-04369-4
ER  - 

@article{
author = "Bajuk-Bogdanovic, Danica and Holclajtner-Antunović, Ivanka and Jovanović, Zoran and Mravik, Željko and Krstić, Jugoslav and Uskoković-Marković, Snežana and Vujkovic, Milica",
year = "2019",
abstract = "The synergistic effects between two Keggin-type heteropoly acids (HPAs) and carbon surface were examined and elucidated. An improved high rate capability (and potential high capacitor electrode for supercapacitors) of the hybrid materials, obtained by anchoring of α-dodecamolybdophosphoric (MoPA), α-dodecatungstophosphoric (WPA), and their mixture to activated carbon (AC), was achieved through the different mechanism of interaction. In order to elaborate this, a detailed analysis of AC-HPA composites has been performed by scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, temperature-programmed desorption (TPD), Fourier-transform infrared spectroscopy (FTIR), micro Raman spectroscopy, and zeta potential measurements. The zeta potential measurements revealed positive charge of carbon surface thus indicating attractive interactions with negatively charged Keggin anion. The surface analysis has shown that WPA spontaneously reduces the carbon surface, while interaction with MoPA leads to its oxidation. As the consequence of the tailoring of the functional groups at carbon surface through HPAs’ action, the distortion of cyclic voltammograms (CVs) decreased in the following order: AC-MoPA, AC-MoPA-WPA, and AC-WPA. A prominent rectangular shape of AC-WPA, even at an extremely high scan rate of 400 mVs−1, was measured, which is rarely demonstrated for carbon-based composites. By applying the theory of electrode potentials, the HPA-AC synergistic effect was explained and discussed in terms of charge storage improvement of HPA-modified carbon.",
publisher = "Springer",
journal = "Journal of Solid State Electrochemistry",
title = "Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?",
volume = "23",
number = "9",
pages = "2747-2758",
doi = "10.1007/s10008-019-04369-4"
}

Bajuk-Bogdanovic, D., Holclajtner-Antunović, I., Jovanović, Z., Mravik, Ž., Krstić, J., Uskoković-Marković, S.,& Vujkovic, M.. (2019). Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?. in Journal of Solid State Electrochemistry
Springer., 23(9), 2747-2758.
https://doi.org/10.1007/s10008-019-04369-4

Bajuk-Bogdanovic D, Holclajtner-Antunović I, Jovanović Z, Mravik Ž, Krstić J, Uskoković-Marković S, Vujkovic M. Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?. in Journal of Solid State Electrochemistry. 2019;23(9):2747-2758.
doi:10.1007/s10008-019-04369-4 .

Bajuk-Bogdanovic, Danica, Holclajtner-Antunović, Ivanka, Jovanović, Zoran, Mravik, Željko, Krstić, Jugoslav, Uskoković-Marković, Snežana, Vujkovic, Milica, "Tailoring the electrochemical charge storage properties of carbonaceous support by redox properties of heteropoly acids: where does the synergy come from?" in Journal of Solid State Electrochemistry, 23, no. 9 (2019):2747-2758,
https://doi.org/10.1007/s10008-019-04369-4 . .

TY  - CONF
AU  - Pavun, Leposava
AU  - Mićić, Svetlana
AU  - Janošević-Ležaić, Aleksandra
AU  - Kovačević, Katarina
AU  - Uskoković-Marković, Snežana
AU  - Pejić, Nataša
PY  - 2018
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5218
AB  - ABSTRACT 
The current research provides the development of the new spectrophotometric 
method for the simple and affordable quercetin quantification. Proposed 
method based on formation of supramolecular assembles of quercetin (Q) and 
cetyl trimethylammonium bromide (CTAB). Under selected experimental 
conditions (l = 378 nm, cCTAB = 2 mM and T = 25 °C), Beer’s law was obeyed 
in the quercetin concentration ranged 2 ¥10-6 - 8¥10-5
 mol dm-3. The method 
sensitivity was 2.1 × 104
 dm2
 mol–1
 (the molar absorptivity) as well as 1¥10-6
mol dm-3 (the limit of detection). The method applicability to the direct Q 
determination in a pharmaceutical formulation (Quercetin+C capsules, 
Twinlab) was demonstrated.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry
T1  - Spectrophotometric quantification of quercetine using a micelle system
VL  - II
SP  - 983
EP  - 986
UR  - https://hdl.handle.net/21.15107/rcub_farfar_5218
ER  - 

@conference{
author = "Pavun, Leposava and Mićić, Svetlana and Janošević-Ležaić, Aleksandra and Kovačević, Katarina and Uskoković-Marković, Snežana and Pejić, Nataša",
year = "2018",
abstract = "ABSTRACT 
The current research provides the development of the new spectrophotometric 
method for the simple and affordable quercetin quantification. Proposed 
method based on formation of supramolecular assembles of quercetin (Q) and 
cetyl trimethylammonium bromide (CTAB). Under selected experimental 
conditions (l = 378 nm, cCTAB = 2 mM and T = 25 °C), Beer’s law was obeyed 
in the quercetin concentration ranged 2 ¥10-6 - 8¥10-5
 mol dm-3. The method 
sensitivity was 2.1 × 104
 dm2
 mol–1
 (the molar absorptivity) as well as 1¥10-6
mol dm-3 (the limit of detection). The method applicability to the direct Q 
determination in a pharmaceutical formulation (Quercetin+C capsules, 
Twinlab) was demonstrated.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry",
title = "Spectrophotometric quantification of quercetine using a micelle system",
volume = "II",
pages = "983-986",
url = "https://hdl.handle.net/21.15107/rcub_farfar_5218"
}

Pavun, L., Mićić, S., Janošević-Ležaić, A., Kovačević, K., Uskoković-Marković, S.,& Pejić, N.. (2018). Spectrophotometric quantification of quercetine using a micelle system. in PHYSICAL CHEMISTRY 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry
Society of Physical Chemists of Serbia., II, 983-986.
https://hdl.handle.net/21.15107/rcub_farfar_5218

Pavun L, Mićić S, Janošević-Ležaić A, Kovačević K, Uskoković-Marković S, Pejić N. Spectrophotometric quantification of quercetine using a micelle system. in PHYSICAL CHEMISTRY 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry. 2018;II:983-986.
https://hdl.handle.net/21.15107/rcub_farfar_5218 .

Pavun, Leposava, Mićić, Svetlana, Janošević-Ležaić, Aleksandra, Kovačević, Katarina, Uskoković-Marković, Snežana, Pejić, Nataša, "Spectrophotometric quantification of quercetine using a micelle system" in PHYSICAL CHEMISTRY 2018 (Proceedings) 14th International Conference  on Fundamental and Applied Aspects of  Physical Chemistry, II (2018):983-986,
https://hdl.handle.net/21.15107/rcub_farfar_5218 .

TY  - CONF
AU  - Pavun, Leposava
AU  - Ćirić, Andrija
AU  - Milenković, Marina
AU  - Uskoković-Marković, Snežana
PY  - 2018
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5220
AB  - Flavonoids are a group of polyphenolic compounds widely present in the herbal world
representing an important part of human diet. Quercetin, which is a flavanol, makes 70% of total daily
intake of flavonoids. Because of the characteristic chemical structure, quercetin has the ability of
complexing metals and antioxidative ability.
Using equimolar solution variation method it was determined that quercetin makes a complex
with zinc(II)-ion in acidic environment (pH 5.25), in stoichiometric relation quercetin:zinc(II)-ion =
2:1, with absorption maximum on λmax=363 nm. The ability of quercetin to make complex
compounds with zinc(II)-ion was used to develop simple, precise and accurate assay to determine the
content of quercetin in various samples of heterogeneous composition.
The proposed indirect spectrophotometric method can selectively determine quercetin in
concentrations ranging from 0.1 to 6.0 mg/L. LOD and LOQ were derived from the calibration curve
and estimated as 0.03 mg/L and 0.1 mg/L respectively. Developed method is reproductive and
accurate, as indicated by high value of correlation coefficient R=0.99996 and low value of
SD=0.00122. Method was successfully used to determine quercetin content in dietary supplement
tablets. Dietary supplements, proscribed for therapeutic and/or profilactic pruposes, usualy content
quercetin combined with other flavonoids and ascorbic acid. Therefore, it was necessary to test the
selectivity of proposed method.
The reliability of the method was checked out by newly developed RP-HPLC/UV method for
capsules with direct determination of quercetin after separation. The good agreement between the two
methods indicates the applicability of the proposed spectrophotometric method for quercetin
determination in dietary supplement tablets with high reproducibility, and enables direct and simple
determination without its prior extraction from samples.
In addition, the antioxidative ability of quecetin and zinc(II)-quercetin complex was
determined using oxidation-reduction standardized methods DPPH and FRAP. The same samples
were tested for antimicrobial activity against seven laboratory control strains of bacteria and one
yeast. As a result of those tests, there are no obstacles to combine quercetin and zinc in the same
formulation.
PB  - Society of Chemists and Technologists of Macedonia
C3  - 25th Congress of Chemists and Technologists of Macedonia, 19–22 September 2018, Ohrid, R. Macedonia
T1  - Spectrophotometric zinc(II) based determination of quercetin in pharmaceutical formulations
SP  - 119
EP  - 119
UR  - https://hdl.handle.net/21.15107/rcub_farfar_5220
ER  - 

@conference{
author = "Pavun, Leposava and Ćirić, Andrija and Milenković, Marina and Uskoković-Marković, Snežana",
year = "2018",
abstract = "Flavonoids are a group of polyphenolic compounds widely present in the herbal world
representing an important part of human diet. Quercetin, which is a flavanol, makes 70% of total daily
intake of flavonoids. Because of the characteristic chemical structure, quercetin has the ability of
complexing metals and antioxidative ability.
Using equimolar solution variation method it was determined that quercetin makes a complex
with zinc(II)-ion in acidic environment (pH 5.25), in stoichiometric relation quercetin:zinc(II)-ion =
2:1, with absorption maximum on λmax=363 nm. The ability of quercetin to make complex
compounds with zinc(II)-ion was used to develop simple, precise and accurate assay to determine the
content of quercetin in various samples of heterogeneous composition.
The proposed indirect spectrophotometric method can selectively determine quercetin in
concentrations ranging from 0.1 to 6.0 mg/L. LOD and LOQ were derived from the calibration curve
and estimated as 0.03 mg/L and 0.1 mg/L respectively. Developed method is reproductive and
accurate, as indicated by high value of correlation coefficient R=0.99996 and low value of
SD=0.00122. Method was successfully used to determine quercetin content in dietary supplement
tablets. Dietary supplements, proscribed for therapeutic and/or profilactic pruposes, usualy content
quercetin combined with other flavonoids and ascorbic acid. Therefore, it was necessary to test the
selectivity of proposed method.
The reliability of the method was checked out by newly developed RP-HPLC/UV method for
capsules with direct determination of quercetin after separation. The good agreement between the two
methods indicates the applicability of the proposed spectrophotometric method for quercetin
determination in dietary supplement tablets with high reproducibility, and enables direct and simple
determination without its prior extraction from samples.
In addition, the antioxidative ability of quecetin and zinc(II)-quercetin complex was
determined using oxidation-reduction standardized methods DPPH and FRAP. The same samples
were tested for antimicrobial activity against seven laboratory control strains of bacteria and one
yeast. As a result of those tests, there are no obstacles to combine quercetin and zinc in the same
formulation.",
publisher = "Society of Chemists and Technologists of Macedonia",
journal = "25th Congress of Chemists and Technologists of Macedonia, 19–22 September 2018, Ohrid, R. Macedonia",
title = "Spectrophotometric zinc(II) based determination of quercetin in pharmaceutical formulations",
pages = "119-119",
url = "https://hdl.handle.net/21.15107/rcub_farfar_5220"
}

Pavun, L., Ćirić, A., Milenković, M.,& Uskoković-Marković, S.. (2018). Spectrophotometric zinc(II) based determination of quercetin in pharmaceutical formulations. in 25th Congress of Chemists and Technologists of Macedonia, 19–22 September 2018, Ohrid, R. Macedonia
Society of Chemists and Technologists of Macedonia., 119-119.
https://hdl.handle.net/21.15107/rcub_farfar_5220

Pavun L, Ćirić A, Milenković M, Uskoković-Marković S. Spectrophotometric zinc(II) based determination of quercetin in pharmaceutical formulations. in 25th Congress of Chemists and Technologists of Macedonia, 19–22 September 2018, Ohrid, R. Macedonia. 2018;:119-119.
https://hdl.handle.net/21.15107/rcub_farfar_5220 .

Pavun, Leposava, Ćirić, Andrija, Milenković, Marina, Uskoković-Marković, Snežana, "Spectrophotometric zinc(II) based determination of quercetin in pharmaceutical formulations" in 25th Congress of Chemists and Technologists of Macedonia, 19–22 September 2018, Ohrid, R. Macedonia (2018):119-119,
https://hdl.handle.net/21.15107/rcub_farfar_5220 .

TY  - JOUR
AU  - Bajuk-Bogdanović, Danica
AU  - Popa, Alexandru
AU  - Uskoković-Marković, Snežana
AU  - Holclajtner-Antunović, Ivanka
PY  - 2017
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2879
AB  - Raman and FTIR spectroscopy are powerful techniques used to characterize or observe alterations in the structure or properties of Keggin type heteropoly acids, microporousimesoporous materials, as well as their composites. These methods were applied in this study for investigation of 12-tungstophosphoric acid (WPA) supported as active phase on zeolites (H-BEA and NaY-zeolite) and mesoporous molecular sieves (TiO2, MCM-41, SBA-15). It has been shown that important information on interaction of heteropoly acid and the support can be obtained by the applied vibrational spectroscopic methods. Obtained results show how interaction of WPA with different supports depends on the nature and properties of both, active phase and the support. In the case of microporous supports such as BEA or NaY zeolites, the basicity of the support, i.e., ratio of Si/Al, strongly determines interaction between WPA species and surface of the support. In the case of mesoporous silica supports, WPA is well dispersed over the support without strong interaction. However, TiO2 causes strong and complex interaction with WPA.
PB  - Elsevier Science BV, Amsterdam
T2  - Waste Management & Research
T1  - Vibrational study of interaction between 12-tungstophosphoric acid and microporous/mesoporous supports
VL  - 92
SP  - 151
EP  - 161
DO  - 10.1016/j.vibspec.2017.06.007
ER  - 

@article{
author = "Bajuk-Bogdanović, Danica and Popa, Alexandru and Uskoković-Marković, Snežana and Holclajtner-Antunović, Ivanka",
year = "2017",
abstract = "Raman and FTIR spectroscopy are powerful techniques used to characterize or observe alterations in the structure or properties of Keggin type heteropoly acids, microporousimesoporous materials, as well as their composites. These methods were applied in this study for investigation of 12-tungstophosphoric acid (WPA) supported as active phase on zeolites (H-BEA and NaY-zeolite) and mesoporous molecular sieves (TiO2, MCM-41, SBA-15). It has been shown that important information on interaction of heteropoly acid and the support can be obtained by the applied vibrational spectroscopic methods. Obtained results show how interaction of WPA with different supports depends on the nature and properties of both, active phase and the support. In the case of microporous supports such as BEA or NaY zeolites, the basicity of the support, i.e., ratio of Si/Al, strongly determines interaction between WPA species and surface of the support. In the case of mesoporous silica supports, WPA is well dispersed over the support without strong interaction. However, TiO2 causes strong and complex interaction with WPA.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Waste Management & Research",
title = "Vibrational study of interaction between 12-tungstophosphoric acid and microporous/mesoporous supports",
volume = "92",
pages = "151-161",
doi = "10.1016/j.vibspec.2017.06.007"
}

Bajuk-Bogdanović, D., Popa, A., Uskoković-Marković, S.,& Holclajtner-Antunović, I.. (2017). Vibrational study of interaction between 12-tungstophosphoric acid and microporous/mesoporous supports. in Waste Management & Research
Elsevier Science BV, Amsterdam., 92, 151-161.
https://doi.org/10.1016/j.vibspec.2017.06.007

Bajuk-Bogdanović D, Popa A, Uskoković-Marković S, Holclajtner-Antunović I. Vibrational study of interaction between 12-tungstophosphoric acid and microporous/mesoporous supports. in Waste Management & Research. 2017;92:151-161.
doi:10.1016/j.vibspec.2017.06.007 .

Bajuk-Bogdanović, Danica, Popa, Alexandru, Uskoković-Marković, Snežana, Holclajtner-Antunović, Ivanka, "Vibrational study of interaction between 12-tungstophosphoric acid and microporous/mesoporous supports" in Waste Management & Research, 92 (2017):151-161,
https://doi.org/10.1016/j.vibspec.2017.06.007 . .

TY  - JOUR
AU  - Bajuk-Bogdanović, Danica
AU  - Uskoković-Marković, Snežana
AU  - Hercigonja, R.
AU  - Popa, Alexandru
AU  - Holclajtner-Antunović, Ivanka
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2581
AB  - Micro Raman spectroscopy was applied to investigate the speciation of heteropoly and isopoly molybdates in 0.05 and 0.005 M aqueous solutions of 12-molybdophosphoric acid at pH values between 1 and 6. For comparative purposes, P-31 NMR spectroscopy was applied too. It is shown that stability of Keggin anion is influenced both by pH and concentration of solution. The Keggin structure is stable in acidic solutions (pH  lt  1.6) while defective Keggin structures are formed with further alkalization (up to pH  lt  5.6). Monolacunary anion PMo11O397- is the main component in the pH region from 1.6 to 3.4. Further removal of molybdenyl species causes the appearance of other vacant Keggin structures such as PMo9O31(OH)(3)(6-) and PMo6O259- at about pH 4. At pH 5.0, anion PMo6O259- is the main species. In solutions with pH greater than 5.0, heteropolymolybdates disappear completely and isopolymolybdates Mo7O246- and MoO42- are formed in higher amounts. In more diluted solution of 0.005 M, the decomposition scheme of 12-molybdophosphoric acid solution with increasing of pH takes place without observation of significant amounts of Mo7O246- species. If alkalinization is performed with 0.5 M instead of 5 M NaOH, there are no significant changes in the Raman spectra of solutions. It is shown that the spectra of evaporated samples may be used for the identification of molecular species in corresponding concentrated solutions. However, Raman spectra of dry residues of more diluted solutions differ from spectra of corresponding solutions due to the reactions performed during the process of drying and cannot be used for unambiguous identification of species in solution. Acidification of 0.05 M solution of Na2MoO4 shows that at pH >5.6, molybdate anion MoO42- dominates, while in the pH range between 5.6 and 1, heptamolybdate anion Mo7O246- is preferentially formed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Spectroscopy Letters
T1  - Study of the decomposition pathway of 12-molybdophosphoric acid in aqueous solutions by micro Raman spectroscopy
VL  - 153
SP  - 152
EP  - 159
DO  - 10.1016/j.saa.2015.08.029
ER  - 

@article{
author = "Bajuk-Bogdanović, Danica and Uskoković-Marković, Snežana and Hercigonja, R. and Popa, Alexandru and Holclajtner-Antunović, Ivanka",
year = "2016",
abstract = "Micro Raman spectroscopy was applied to investigate the speciation of heteropoly and isopoly molybdates in 0.05 and 0.005 M aqueous solutions of 12-molybdophosphoric acid at pH values between 1 and 6. For comparative purposes, P-31 NMR spectroscopy was applied too. It is shown that stability of Keggin anion is influenced both by pH and concentration of solution. The Keggin structure is stable in acidic solutions (pH  lt  1.6) while defective Keggin structures are formed with further alkalization (up to pH  lt  5.6). Monolacunary anion PMo11O397- is the main component in the pH region from 1.6 to 3.4. Further removal of molybdenyl species causes the appearance of other vacant Keggin structures such as PMo9O31(OH)(3)(6-) and PMo6O259- at about pH 4. At pH 5.0, anion PMo6O259- is the main species. In solutions with pH greater than 5.0, heteropolymolybdates disappear completely and isopolymolybdates Mo7O246- and MoO42- are formed in higher amounts. In more diluted solution of 0.005 M, the decomposition scheme of 12-molybdophosphoric acid solution with increasing of pH takes place without observation of significant amounts of Mo7O246- species. If alkalinization is performed with 0.5 M instead of 5 M NaOH, there are no significant changes in the Raman spectra of solutions. It is shown that the spectra of evaporated samples may be used for the identification of molecular species in corresponding concentrated solutions. However, Raman spectra of dry residues of more diluted solutions differ from spectra of corresponding solutions due to the reactions performed during the process of drying and cannot be used for unambiguous identification of species in solution. Acidification of 0.05 M solution of Na2MoO4 shows that at pH >5.6, molybdate anion MoO42- dominates, while in the pH range between 5.6 and 1, heptamolybdate anion Mo7O246- is preferentially formed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Spectroscopy Letters",
title = "Study of the decomposition pathway of 12-molybdophosphoric acid in aqueous solutions by micro Raman spectroscopy",
volume = "153",
pages = "152-159",
doi = "10.1016/j.saa.2015.08.029"
}

Bajuk-Bogdanović, D., Uskoković-Marković, S., Hercigonja, R., Popa, A.,& Holclajtner-Antunović, I.. (2016). Study of the decomposition pathway of 12-molybdophosphoric acid in aqueous solutions by micro Raman spectroscopy. in Spectroscopy Letters
Pergamon-Elsevier Science Ltd, Oxford., 153, 152-159.
https://doi.org/10.1016/j.saa.2015.08.029

Bajuk-Bogdanović D, Uskoković-Marković S, Hercigonja R, Popa A, Holclajtner-Antunović I. Study of the decomposition pathway of 12-molybdophosphoric acid in aqueous solutions by micro Raman spectroscopy. in Spectroscopy Letters. 2016;153:152-159.
doi:10.1016/j.saa.2015.08.029 .

Bajuk-Bogdanović, Danica, Uskoković-Marković, Snežana, Hercigonja, R., Popa, Alexandru, Holclajtner-Antunović, Ivanka, "Study of the decomposition pathway of 12-molybdophosphoric acid in aqueous solutions by micro Raman spectroscopy" in Spectroscopy Letters, 153 (2016):152-159,
https://doi.org/10.1016/j.saa.2015.08.029 . .

TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka
AU  - Bajuk-Bogdanović, Danica
AU  - Popa, Alexandru
AU  - Nedić-Vasiljević, Bojana
AU  - Krstić, Jugoslav
AU  - Mentus, Slavko
AU  - Uskoković-Marković, Snežana
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2470
AB  - The objective of this study is the structural and morphological characterization of the Ag3PW12O40 salts (AgWPA) of 12-tungstophosphoric acid (WPA) obtained under different preparation conditions and testing of their acid catalytic activity in dehydration of ethanol. The structure, morphology and physicochemical characteristics were determined by Fourier transform infrared (FT-IR) and Raman spectroscopy, X-ray diffraction (XRD), nitrogen physisorption at +/- 196 degrees C, scanning electron microscopy (SEM) and differential thermal (DTA) and thermogravimetric analysis (TGA). It is shown that the preparation process has a significant influence on the morphological properties of the obtained materials which may be explained by the supposed mechanism of the formation of nanocrystallite's aggregates with more or less epitaxial connection. Neutral AgWPA obtained by filtration from supernatant forms porous aggregates of a symmetric dodecahedral shape, having average sizes about 2 mu m. This sample shows higher specific area in comparison with the salt obtained by evaporation due to the higher micropore volume, while mesopore volumes are the same for both salts. Thus conversion of ethanol and selectivities of the main products, ethylene and diethyl ether, are almost the same and constant for both prepared salts, while their values are changed over the reaction time for the parent WPA acid.
PB  - Elsevier Science BV, Amsterdam
T2  - Applied Surface Science
T1  - Structural, morphological and catalytic characterization of neutral Ag salt of 12-tungstophosphoric acid: Influence of preparation conditions
VL  - 328
SP  - 466
EP  - 474
DO  - 10.1016/j.apsusc.2014.12.062
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka and Bajuk-Bogdanović, Danica and Popa, Alexandru and Nedić-Vasiljević, Bojana and Krstić, Jugoslav and Mentus, Slavko and Uskoković-Marković, Snežana",
year = "2015",
abstract = "The objective of this study is the structural and morphological characterization of the Ag3PW12O40 salts (AgWPA) of 12-tungstophosphoric acid (WPA) obtained under different preparation conditions and testing of their acid catalytic activity in dehydration of ethanol. The structure, morphology and physicochemical characteristics were determined by Fourier transform infrared (FT-IR) and Raman spectroscopy, X-ray diffraction (XRD), nitrogen physisorption at +/- 196 degrees C, scanning electron microscopy (SEM) and differential thermal (DTA) and thermogravimetric analysis (TGA). It is shown that the preparation process has a significant influence on the morphological properties of the obtained materials which may be explained by the supposed mechanism of the formation of nanocrystallite's aggregates with more or less epitaxial connection. Neutral AgWPA obtained by filtration from supernatant forms porous aggregates of a symmetric dodecahedral shape, having average sizes about 2 mu m. This sample shows higher specific area in comparison with the salt obtained by evaporation due to the higher micropore volume, while mesopore volumes are the same for both salts. Thus conversion of ethanol and selectivities of the main products, ethylene and diethyl ether, are almost the same and constant for both prepared salts, while their values are changed over the reaction time for the parent WPA acid.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Applied Surface Science",
title = "Structural, morphological and catalytic characterization of neutral Ag salt of 12-tungstophosphoric acid: Influence of preparation conditions",
volume = "328",
pages = "466-474",
doi = "10.1016/j.apsusc.2014.12.062"
}

Holclajtner-Antunović, I., Bajuk-Bogdanović, D., Popa, A., Nedić-Vasiljević, B., Krstić, J., Mentus, S.,& Uskoković-Marković, S.. (2015). Structural, morphological and catalytic characterization of neutral Ag salt of 12-tungstophosphoric acid: Influence of preparation conditions. in Applied Surface Science
Elsevier Science BV, Amsterdam., 328, 466-474.
https://doi.org/10.1016/j.apsusc.2014.12.062

Holclajtner-Antunović I, Bajuk-Bogdanović D, Popa A, Nedić-Vasiljević B, Krstić J, Mentus S, Uskoković-Marković S. Structural, morphological and catalytic characterization of neutral Ag salt of 12-tungstophosphoric acid: Influence of preparation conditions. in Applied Surface Science. 2015;328:466-474.
doi:10.1016/j.apsusc.2014.12.062 .

Holclajtner-Antunović, Ivanka, Bajuk-Bogdanović, Danica, Popa, Alexandru, Nedić-Vasiljević, Bojana, Krstić, Jugoslav, Mentus, Slavko, Uskoković-Marković, Snežana, "Structural, morphological and catalytic characterization of neutral Ag salt of 12-tungstophosphoric acid: Influence of preparation conditions" in Applied Surface Science, 328 (2015):466-474,
https://doi.org/10.1016/j.apsusc.2014.12.062 . .

TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka
AU  - Bajuk-Bogdanović, Danica
AU  - Popa, Alexandru
AU  - Sasca, Viorel
AU  - Nedić-Vasiljević, Bojana
AU  - Rakić, Aleksandra
AU  - Uskoković-Marković, Snežana
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2460
AB  - The current study reports the synthesis and characterization of tungstophosphoric acid and its acid silver salt supported on mesoporous molecular sieve SBA-15 and TiO2. Because silver salts are partially insoluble, the SBA-15 and TiO2 supported silver acid salts were prepared by two step sequential impregnations. The synthesized catalysts were characterized by various physicochemical methods such as Fourier transform infrared and Raman spectroscopy, differential thermal analysis, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and nitrogen physisorption at -196 degrees C. It is observed that both active phases keep their Keggin-type structure after being supported on the supports while their specific surface area is considerably increased by deposition on mesoporous substrates. The results also indicated that the synthesized catalysts retained the morphology specific for each of the supports, while their thermal stability is increased in comparison with their active phases. The catalytic activity of the prepared catalysts was probed for the vapor phase dehydration of ethanol at 300 degrees C. Results revealed that all the catalysts show considerably improved catalytic activity in comparison to the bulk active phases.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Preparation, characterization and catalytic activity of mesoporous Ag2HPW12O40/SBA-15 and Ag2HPW12O40/TiO2 composites
VL  - 160
SP  - 359
EP  - 368
DO  - 10.1016/j.matchemphys.2015.04.052
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka and Bajuk-Bogdanović, Danica and Popa, Alexandru and Sasca, Viorel and Nedić-Vasiljević, Bojana and Rakić, Aleksandra and Uskoković-Marković, Snežana",
year = "2015",
abstract = "The current study reports the synthesis and characterization of tungstophosphoric acid and its acid silver salt supported on mesoporous molecular sieve SBA-15 and TiO2. Because silver salts are partially insoluble, the SBA-15 and TiO2 supported silver acid salts were prepared by two step sequential impregnations. The synthesized catalysts were characterized by various physicochemical methods such as Fourier transform infrared and Raman spectroscopy, differential thermal analysis, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy and nitrogen physisorption at -196 degrees C. It is observed that both active phases keep their Keggin-type structure after being supported on the supports while their specific surface area is considerably increased by deposition on mesoporous substrates. The results also indicated that the synthesized catalysts retained the morphology specific for each of the supports, while their thermal stability is increased in comparison with their active phases. The catalytic activity of the prepared catalysts was probed for the vapor phase dehydration of ethanol at 300 degrees C. Results revealed that all the catalysts show considerably improved catalytic activity in comparison to the bulk active phases.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Preparation, characterization and catalytic activity of mesoporous Ag2HPW12O40/SBA-15 and Ag2HPW12O40/TiO2 composites",
volume = "160",
pages = "359-368",
doi = "10.1016/j.matchemphys.2015.04.052"
}

Holclajtner-Antunović, I., Bajuk-Bogdanović, D., Popa, A., Sasca, V., Nedić-Vasiljević, B., Rakić, A.,& Uskoković-Marković, S.. (2015). Preparation, characterization and catalytic activity of mesoporous Ag2HPW12O40/SBA-15 and Ag2HPW12O40/TiO2 composites. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 160, 359-368.
https://doi.org/10.1016/j.matchemphys.2015.04.052

Holclajtner-Antunović I, Bajuk-Bogdanović D, Popa A, Sasca V, Nedić-Vasiljević B, Rakić A, Uskoković-Marković S. Preparation, characterization and catalytic activity of mesoporous Ag2HPW12O40/SBA-15 and Ag2HPW12O40/TiO2 composites. in Materials Chemistry and Physics. 2015;160:359-368.
doi:10.1016/j.matchemphys.2015.04.052 .

Holclajtner-Antunović, Ivanka, Bajuk-Bogdanović, Danica, Popa, Alexandru, Sasca, Viorel, Nedić-Vasiljević, Bojana, Rakić, Aleksandra, Uskoković-Marković, Snežana, "Preparation, characterization and catalytic activity of mesoporous Ag2HPW12O40/SBA-15 and Ag2HPW12O40/TiO2 composites" in Materials Chemistry and Physics, 160 (2015):359-368,
https://doi.org/10.1016/j.matchemphys.2015.04.052 . .

TY  - JOUR
AU  - Bajuk-Bogdanović, Danica
AU  - Uskoković-Marković, Snežana
AU  - Holclajtner-Antunović, Ivanka
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2378
AB  - Heteropoly acids (HPA) attract the attention of large variety of scientists, due to HPA's extraordinary interesting properties and possible application fields. 12-tungstosilicic acid (WSiA), the Keggin type HPA, has some promising characteristic to be used in catalytic processes, but with not well-defined stability. Raman spectroscopy was used for in situ analysis of WSiA hydrolysis in detail in a wide pH range of 1-12. Raman spectroscopy is able to give an almost immediate response/spectrum as a representation of the exact profile/composition of the solution. This method and FTIR spectroscopy, as a complementary technique, enabled recording of the solid and liquid phases of the same sample under different conditions. Our results confirm that the decomposition pathways of WSiA in solution proceed via the formation of the lacunary monovacant anion at pH > 6.4. This anion is a major constituent in pH range up to 9.5. With further increases in pH this species convert to the trivacant lacunary anion. The total decomposition of the Keggin anion to silicate and tungstate occurs at pH > 11.0. The results of the performed study contribute to understand the behavior of WSiA in the water-methanol solution, as the model system of aqueous-organic system. It is concluded that addition of methanol in aqueous solution of WSiA leads to expansion of the pH region where Keggin anion is stable up to 8.1 and above this pH value, precipitation occurs. The obtained data clarify the stability range of WSiA in both water and water-methanol solutions, as well.
PB  - Springer, New York
T2  - Journal of the Iranian Chemical Society
T1  - Vibration Spectroscopy Stability Investigation of 12-Tungstosilicic Acid Solution
VL  - 12
IS  - 1
SP  - 137
EP  - 145
DO  - 10.1007/s13738-014-0466-y
ER  - 

@article{
author = "Bajuk-Bogdanović, Danica and Uskoković-Marković, Snežana and Holclajtner-Antunović, Ivanka",
year = "2015",
abstract = "Heteropoly acids (HPA) attract the attention of large variety of scientists, due to HPA's extraordinary interesting properties and possible application fields. 12-tungstosilicic acid (WSiA), the Keggin type HPA, has some promising characteristic to be used in catalytic processes, but with not well-defined stability. Raman spectroscopy was used for in situ analysis of WSiA hydrolysis in detail in a wide pH range of 1-12. Raman spectroscopy is able to give an almost immediate response/spectrum as a representation of the exact profile/composition of the solution. This method and FTIR spectroscopy, as a complementary technique, enabled recording of the solid and liquid phases of the same sample under different conditions. Our results confirm that the decomposition pathways of WSiA in solution proceed via the formation of the lacunary monovacant anion at pH > 6.4. This anion is a major constituent in pH range up to 9.5. With further increases in pH this species convert to the trivacant lacunary anion. The total decomposition of the Keggin anion to silicate and tungstate occurs at pH > 11.0. The results of the performed study contribute to understand the behavior of WSiA in the water-methanol solution, as the model system of aqueous-organic system. It is concluded that addition of methanol in aqueous solution of WSiA leads to expansion of the pH region where Keggin anion is stable up to 8.1 and above this pH value, precipitation occurs. The obtained data clarify the stability range of WSiA in both water and water-methanol solutions, as well.",
publisher = "Springer, New York",
journal = "Journal of the Iranian Chemical Society",
title = "Vibration Spectroscopy Stability Investigation of 12-Tungstosilicic Acid Solution",
volume = "12",
number = "1",
pages = "137-145",
doi = "10.1007/s13738-014-0466-y"
}

Bajuk-Bogdanović, D., Uskoković-Marković, S.,& Holclajtner-Antunović, I.. (2015). Vibration Spectroscopy Stability Investigation of 12-Tungstosilicic Acid Solution. in Journal of the Iranian Chemical Society
Springer, New York., 12(1), 137-145.
https://doi.org/10.1007/s13738-014-0466-y

Bajuk-Bogdanović D, Uskoković-Marković S, Holclajtner-Antunović I. Vibration Spectroscopy Stability Investigation of 12-Tungstosilicic Acid Solution. in Journal of the Iranian Chemical Society. 2015;12(1):137-145.
doi:10.1007/s13738-014-0466-y .

Bajuk-Bogdanović, Danica, Uskoković-Marković, Snežana, Holclajtner-Antunović, Ivanka, "Vibration Spectroscopy Stability Investigation of 12-Tungstosilicic Acid Solution" in Journal of the Iranian Chemical Society, 12, no. 1 (2015):137-145,
https://doi.org/10.1007/s13738-014-0466-y . .

TY  - JOUR
AU  - Janošević-Ležaić, Aleksandra
AU  - Pasti, Igor
AU  - Vukomanović, Marija
AU  - Ćirić-Marjanović, Gordana
PY  - 2014
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2135
AB  - Polyaniline tannate (PANI-TA) solid microspheres were synthesized by the external-template-free oxidative polymerization of aniline with ammonium peroxydisulfate (APS) in aqueous solution of tannic acid (TA). Syntheses were performed using fixed mole ratio [TA]/[aniline] and varying [APS]/[aniline] mole ratios and polymerization times. PANI-TA materials were characterized by scanning and transmission electron microscopies, FTIR and Raman spectroscopies, elemental microanalysis and conductivity measurements, and their structure and properties were compared. The ability of PANI-TA microspheres to act as antioxidants was investigated by cyclic voltammetry using the electrocatalytical reduction of O-2 to the superoxide anion radical (O-center dot(2)-) and analyzing the evolution of the electrochemical response upon successive addition of PANI-TA as a radical scavenger. All synthesized materials showed very good O-center dot(2)- scavenging activity. It was shown that the scavenging activity of PANI-TA can be tuned by the conditions of its synthesis, thus leading to the material showing higher antioxidant activity than pure TA. Observed differences in radical scavenging activities of PANI-TA materials were discussed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Polyaniline tannate - Synthesis, characterization and electrochemical assessment of superoxide anion radical scavenging activity
VL  - 142
SP  - 92
EP  - 100
DO  - 10.1016/j.electacta.2014.07.073
ER  - 

@article{
author = "Janošević-Ležaić, Aleksandra and Pasti, Igor and Vukomanović, Marija and Ćirić-Marjanović, Gordana",
year = "2014",
abstract = "Polyaniline tannate (PANI-TA) solid microspheres were synthesized by the external-template-free oxidative polymerization of aniline with ammonium peroxydisulfate (APS) in aqueous solution of tannic acid (TA). Syntheses were performed using fixed mole ratio [TA]/[aniline] and varying [APS]/[aniline] mole ratios and polymerization times. PANI-TA materials were characterized by scanning and transmission electron microscopies, FTIR and Raman spectroscopies, elemental microanalysis and conductivity measurements, and their structure and properties were compared. The ability of PANI-TA microspheres to act as antioxidants was investigated by cyclic voltammetry using the electrocatalytical reduction of O-2 to the superoxide anion radical (O-center dot(2)-) and analyzing the evolution of the electrochemical response upon successive addition of PANI-TA as a radical scavenger. All synthesized materials showed very good O-center dot(2)- scavenging activity. It was shown that the scavenging activity of PANI-TA can be tuned by the conditions of its synthesis, thus leading to the material showing higher antioxidant activity than pure TA. Observed differences in radical scavenging activities of PANI-TA materials were discussed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Polyaniline tannate - Synthesis, characterization and electrochemical assessment of superoxide anion radical scavenging activity",
volume = "142",
pages = "92-100",
doi = "10.1016/j.electacta.2014.07.073"
}

Janošević-Ležaić, A., Pasti, I., Vukomanović, M.,& Ćirić-Marjanović, G.. (2014). Polyaniline tannate - Synthesis, characterization and electrochemical assessment of superoxide anion radical scavenging activity. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 142, 92-100.
https://doi.org/10.1016/j.electacta.2014.07.073

Janošević-Ležaić A, Pasti I, Vukomanović M, Ćirić-Marjanović G. Polyaniline tannate - Synthesis, characterization and electrochemical assessment of superoxide anion radical scavenging activity. in Electrochimica Acta. 2014;142:92-100.
doi:10.1016/j.electacta.2014.07.073 .

Janošević-Ležaić, Aleksandra, Pasti, Igor, Vukomanović, Marija, Ćirić-Marjanović, Gordana, "Polyaniline tannate - Synthesis, characterization and electrochemical assessment of superoxide anion radical scavenging activity" in Electrochimica Acta, 142 (2014):92-100,
https://doi.org/10.1016/j.electacta.2014.07.073 . .

TY  - JOUR
AU  - Kuntić, Vesna
AU  - Brborić, Jasmina
AU  - Holclajtner-Antunović, Ivanka
AU  - Uskoković-Marković, Snežana
PY  - 2014
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2256
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Evaluating the bioactive effects of flavonoid hesperidin: A new literature data survey
T1  - Ocena bioaktivnih efekata flavonoida hesperidina - pregled podataka iz novije literature
VL  - 71
IS  - 1
SP  - 60
EP  - 65
DO  - 10.2298/VSP1401060K
ER  - 

@article{
author = "Kuntić, Vesna and Brborić, Jasmina and Holclajtner-Antunović, Ivanka and Uskoković-Marković, Snežana",
year = "2014",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Evaluating the bioactive effects of flavonoid hesperidin: A new literature data survey, Ocena bioaktivnih efekata flavonoida hesperidina - pregled podataka iz novije literature",
volume = "71",
number = "1",
pages = "60-65",
doi = "10.2298/VSP1401060K"
}

Kuntić, V., Brborić, J., Holclajtner-Antunović, I.,& Uskoković-Marković, S.. (2014). Evaluating the bioactive effects of flavonoid hesperidin: A new literature data survey. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 71(1), 60-65.
https://doi.org/10.2298/VSP1401060K

Kuntić V, Brborić J, Holclajtner-Antunović I, Uskoković-Marković S. Evaluating the bioactive effects of flavonoid hesperidin: A new literature data survey. in Vojnosanitetski pregled. 2014;71(1):60-65.
doi:10.2298/VSP1401060K .

Kuntić, Vesna, Brborić, Jasmina, Holclajtner-Antunović, Ivanka, Uskoković-Marković, Snežana, "Evaluating the bioactive effects of flavonoid hesperidin: A new literature data survey" in Vojnosanitetski pregled, 71, no. 1 (2014):60-65,
https://doi.org/10.2298/VSP1401060K . .

TY  - JOUR
AU  - Bošnjaković-Pavlović, Nada
AU  - Stefanović, Marijana
AU  - Anić, Slobodan
AU  - Adnađević, Borivoj
AU  - Jeličić, Mihajlo
AU  - Lukić, Vera
AU  - Uskoković-Marković, Snežana
PY  - 2014
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2268
AB  - The prevalence of alcohol in blood samples from medicolegal autopsies performed in the Institute of Forensic Medicine in Belgrade, in 2011, was studied. In total, 293 blood samples were analyzed for alcohol by headspace gas chromatography. The blood alcohol concentrations were evaluated according to sex, age, and cause of death. The blood alcohol concentrations were . 0.5 g/L in 23.9% of the cases; in suicides 22.4%, accidents 34.4% and homicides 25.0%. The largest proportion of high BACs were found in the sample from subjects killed in traffic accidents. These findings confirm that alcohol use is an important factor in many fatal accidents, suicides and cases of violent death.
AB  - U ovom radu su razmatrani rezultati post mortem koncentracije alkohola (BAC) u 293 uzorka krvi dobijena na osnovu sudsko-medicinskih autopsija sprovedenih na Institutu za sudsku medicinu u Beogradu tokom 2011. godine. Gasna hromatografija sa headspace tehnikom (HS GH) se koristi kao rutinska i referentna metoda za određivanje alkohola. Podaci su analizirani prema godištu i polu žrtve u trenutku smrti i prema uzroku smrti. Od ukupnog broja žrtava, svaka treća žrtva je bila pod uticajem alkohola u momentu smrti. BAC je bila - 0.5 g/L u 23.9% slučajeva, i to 22.4% kod samoubistava, 34.4% kod nesrećnih slučajeva i 25.0% u slučajevima ubistava. Najveći procenat visokih vrednosti BAC utvrđen je u uzorcima subjekata nastradalih u saobraćajnim nesrećama. Kod žrtava saobraćajnih nesreća, od 42 slučaja pozitivnih na alkohol, 26 žrtava ima koncentracija alkohola u krvi veću od 2 g/L. 90% žrtava pozitivno testiranih na alkohola su muškarci.Analiza pokazuje da je alkohol visok faktor rizika kod mnogih fatalnih nesreća, samoubistava i slučajeva nasilne smrti. Podaci izneti u ovom radu svakako bi trebalo da pomognu u razumevanju uloge alkohola u momentu smrti ali i da skrenu pažnju celom društvu u borbi protiv alkoholizma.
PB  - Kriminalističko-policijski univerzitet, Beograd
T2  - Nauka, bezbednost, policija
T1  - Prevalence of post-mortem blood alcohol concentration among deaths in Serbia during 2011
T1  - Rezultati post mortem analize koncentracije alkohola u krvi u Srbiji tokom 2011 godine
IS  - 1
SP  - 161
EP  - 171
DO  - 10.5937/NBP1401161B
ER  - 

@article{
author = "Bošnjaković-Pavlović, Nada and Stefanović, Marijana and Anić, Slobodan and Adnađević, Borivoj and Jeličić, Mihajlo and Lukić, Vera and Uskoković-Marković, Snežana",
year = "2014",
abstract = "The prevalence of alcohol in blood samples from medicolegal autopsies performed in the Institute of Forensic Medicine in Belgrade, in 2011, was studied. In total, 293 blood samples were analyzed for alcohol by headspace gas chromatography. The blood alcohol concentrations were evaluated according to sex, age, and cause of death. The blood alcohol concentrations were . 0.5 g/L in 23.9% of the cases; in suicides 22.4%, accidents 34.4% and homicides 25.0%. The largest proportion of high BACs were found in the sample from subjects killed in traffic accidents. These findings confirm that alcohol use is an important factor in many fatal accidents, suicides and cases of violent death., U ovom radu su razmatrani rezultati post mortem koncentracije alkohola (BAC) u 293 uzorka krvi dobijena na osnovu sudsko-medicinskih autopsija sprovedenih na Institutu za sudsku medicinu u Beogradu tokom 2011. godine. Gasna hromatografija sa headspace tehnikom (HS GH) se koristi kao rutinska i referentna metoda za određivanje alkohola. Podaci su analizirani prema godištu i polu žrtve u trenutku smrti i prema uzroku smrti. Od ukupnog broja žrtava, svaka treća žrtva je bila pod uticajem alkohola u momentu smrti. BAC je bila - 0.5 g/L u 23.9% slučajeva, i to 22.4% kod samoubistava, 34.4% kod nesrećnih slučajeva i 25.0% u slučajevima ubistava. Najveći procenat visokih vrednosti BAC utvrđen je u uzorcima subjekata nastradalih u saobraćajnim nesrećama. Kod žrtava saobraćajnih nesreća, od 42 slučaja pozitivnih na alkohol, 26 žrtava ima koncentracija alkohola u krvi veću od 2 g/L. 90% žrtava pozitivno testiranih na alkohola su muškarci.Analiza pokazuje da je alkohol visok faktor rizika kod mnogih fatalnih nesreća, samoubistava i slučajeva nasilne smrti. Podaci izneti u ovom radu svakako bi trebalo da pomognu u razumevanju uloge alkohola u momentu smrti ali i da skrenu pažnju celom društvu u borbi protiv alkoholizma.",
publisher = "Kriminalističko-policijski univerzitet, Beograd",
journal = "Nauka, bezbednost, policija",
title = "Prevalence of post-mortem blood alcohol concentration among deaths in Serbia during 2011, Rezultati post mortem analize koncentracije alkohola u krvi u Srbiji tokom 2011 godine",
number = "1",
pages = "161-171",
doi = "10.5937/NBP1401161B"
}

Bošnjaković-Pavlović, N., Stefanović, M., Anić, S., Adnađević, B., Jeličić, M., Lukić, V.,& Uskoković-Marković, S.. (2014). Prevalence of post-mortem blood alcohol concentration among deaths in Serbia during 2011. in Nauka, bezbednost, policija
Kriminalističko-policijski univerzitet, Beograd.(1), 161-171.
https://doi.org/10.5937/NBP1401161B

Bošnjaković-Pavlović N, Stefanović M, Anić S, Adnađević B, Jeličić M, Lukić V, Uskoković-Marković S. Prevalence of post-mortem blood alcohol concentration among deaths in Serbia during 2011. in Nauka, bezbednost, policija. 2014;(1):161-171.
doi:10.5937/NBP1401161B .

Bošnjaković-Pavlović, Nada, Stefanović, Marijana, Anić, Slobodan, Adnađević, Borivoj, Jeličić, Mihajlo, Lukić, Vera, Uskoković-Marković, Snežana, "Prevalence of post-mortem blood alcohol concentration among deaths in Serbia during 2011" in Nauka, bezbednost, policija, no. 1 (2014):161-171,
https://doi.org/10.5937/NBP1401161B . .

TY  - JOUR
AU  - Ćirić-Marjanović, Gordana
AU  - Pasti, Igor
AU  - Gavrilov, Nemanja
AU  - Janošević, Aleksandra
AU  - Mentus, Slavko
PY  - 2013
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1988
AB  - Polyaniline (PANI) and polypyrrole (PPY) undergo carbonisation in an inert/reduction atmosphere and vacuum, yielding different nitrogen-containing carbon materials. This contribution reviews various procedures for the carbonisation of PANI and PPY precursors, and the characteristics of obtained carbonised PANI (C-PANI) and carbonised PPY (C-PPY). Special attention is paid to the role of synthetic procedures in tailoring the formation of C-PANI and C-PPY nanostructures and nanocomposites. The review considers the importance of scanning and transmission electron microscopies, XPS, FTIR, Raman, NMR, and EPR spectroscopies, electrical conductivity and adsorption/desorption measurements, XRD, and elemental analyses in the characterisation of C-PANIs and C-PPYs. The application of C-PANI and C-PPY in various fields of modern technology is also reviewed.
PB  - Springer International Publishing Ag, Cham
T2  - Chemical Papers
T1  - Carbonised polyaniline and polypyrrole: towards advanced nitrogen-containing carbon materials
VL  - 67
IS  - 8
SP  - 781
EP  - 813
DO  - 10.2478/s11696-013-0312-1
ER  - 

@article{
author = "Ćirić-Marjanović, Gordana and Pasti, Igor and Gavrilov, Nemanja and Janošević, Aleksandra and Mentus, Slavko",
year = "2013",
abstract = "Polyaniline (PANI) and polypyrrole (PPY) undergo carbonisation in an inert/reduction atmosphere and vacuum, yielding different nitrogen-containing carbon materials. This contribution reviews various procedures for the carbonisation of PANI and PPY precursors, and the characteristics of obtained carbonised PANI (C-PANI) and carbonised PPY (C-PPY). Special attention is paid to the role of synthetic procedures in tailoring the formation of C-PANI and C-PPY nanostructures and nanocomposites. The review considers the importance of scanning and transmission electron microscopies, XPS, FTIR, Raman, NMR, and EPR spectroscopies, electrical conductivity and adsorption/desorption measurements, XRD, and elemental analyses in the characterisation of C-PANIs and C-PPYs. The application of C-PANI and C-PPY in various fields of modern technology is also reviewed.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Chemical Papers",
title = "Carbonised polyaniline and polypyrrole: towards advanced nitrogen-containing carbon materials",
volume = "67",
number = "8",
pages = "781-813",
doi = "10.2478/s11696-013-0312-1"
}

Ćirić-Marjanović, G., Pasti, I., Gavrilov, N., Janošević, A.,& Mentus, S.. (2013). Carbonised polyaniline and polypyrrole: towards advanced nitrogen-containing carbon materials. in Chemical Papers
Springer International Publishing Ag, Cham., 67(8), 781-813.
https://doi.org/10.2478/s11696-013-0312-1

Ćirić-Marjanović G, Pasti I, Gavrilov N, Janošević A, Mentus S. Carbonised polyaniline and polypyrrole: towards advanced nitrogen-containing carbon materials. in Chemical Papers. 2013;67(8):781-813.
doi:10.2478/s11696-013-0312-1 .

Ćirić-Marjanović, Gordana, Pasti, Igor, Gavrilov, Nemanja, Janošević, Aleksandra, Mentus, Slavko, "Carbonised polyaniline and polypyrrole: towards advanced nitrogen-containing carbon materials" in Chemical Papers, 67, no. 8 (2013):781-813,
https://doi.org/10.2478/s11696-013-0312-1 . .

TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka
AU  - Popa, Alexandru
AU  - Bajuk-Bogdanović, Danica
AU  - Mentus, Slavko
AU  - Nedić-Vasiljević, Bojana
AU  - Uskoković-Marković, Snežana
PY  - 2013
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1872
AB  - The silver acid salts AgxH3-xPW12O40 (Ag(x)WPA), where Ag content is x = 1 up to x = 2.5, were synthesized and characterized by Fourier transform infrared and micro-Raman spectroscopy, powder X-ray diffraction and differential thermal and thermogravimetric analysis and nitrogen adsorption. The properties of the prepared salts are compared with those of the parent acid. Regarding the structural, textural and thermal and solubility characteristics, these salts are between salts of group A, with small metal ions, and B group salts with large metal ions. The acid salts are two phase mixtures of soluble acid and insoluble neutral salt, like other alkaline acid salts of H3PW12O40 for x  lt  2. The catalytic properties of the acid salts have been studied for the vapor-phase dehydration of ethanol, carried out in a conventional flow-type reactor at 300 degrees C. The acid salts exhibited stable catalytic activity, a little bit lower than tungstophosphoric acid for ethylene production from ethanol.
PB  - Elsevier Science Sa, Lausanne
T2  - Inorganica Chimica Acta
T1  - Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid
VL  - 407
SP  - 197
EP  - 203
DO  - 10.1016/j.ica.2013.07.035
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka and Popa, Alexandru and Bajuk-Bogdanović, Danica and Mentus, Slavko and Nedić-Vasiljević, Bojana and Uskoković-Marković, Snežana",
year = "2013",
abstract = "The silver acid salts AgxH3-xPW12O40 (Ag(x)WPA), where Ag content is x = 1 up to x = 2.5, were synthesized and characterized by Fourier transform infrared and micro-Raman spectroscopy, powder X-ray diffraction and differential thermal and thermogravimetric analysis and nitrogen adsorption. The properties of the prepared salts are compared with those of the parent acid. Regarding the structural, textural and thermal and solubility characteristics, these salts are between salts of group A, with small metal ions, and B group salts with large metal ions. The acid salts are two phase mixtures of soluble acid and insoluble neutral salt, like other alkaline acid salts of H3PW12O40 for x  lt  2. The catalytic properties of the acid salts have been studied for the vapor-phase dehydration of ethanol, carried out in a conventional flow-type reactor at 300 degrees C. The acid salts exhibited stable catalytic activity, a little bit lower than tungstophosphoric acid for ethylene production from ethanol.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Inorganica Chimica Acta",
title = "Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid",
volume = "407",
pages = "197-203",
doi = "10.1016/j.ica.2013.07.035"
}

Holclajtner-Antunović, I., Popa, A., Bajuk-Bogdanović, D., Mentus, S., Nedić-Vasiljević, B.,& Uskoković-Marković, S.. (2013). Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid. in Inorganica Chimica Acta
Elsevier Science Sa, Lausanne., 407, 197-203.
https://doi.org/10.1016/j.ica.2013.07.035

Holclajtner-Antunović I, Popa A, Bajuk-Bogdanović D, Mentus S, Nedić-Vasiljević B, Uskoković-Marković S. Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid. in Inorganica Chimica Acta. 2013;407:197-203.
doi:10.1016/j.ica.2013.07.035 .

Holclajtner-Antunović, Ivanka, Popa, Alexandru, Bajuk-Bogdanović, Danica, Mentus, Slavko, Nedić-Vasiljević, Bojana, Uskoković-Marković, Snežana, "Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid" in Inorganica Chimica Acta, 407 (2013):197-203,
https://doi.org/10.1016/j.ica.2013.07.035 . .

TY  - JOUR
AU  - Janošević, Aleksandra
AU  - Marjanović, Budimir
AU  - Rakić, Aleksandra
AU  - Ćirić-Marjanović, Gordana
PY  - 2013
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2035
AB  - Recent advances in synthesis, characterization and application of the selected conducting/semiconducting and redox-active oligomers and polymers of arylamines are reviewed. A brief historical background of the selected topics is given. The overview of the preparation, structure and properties of polyaniline, substituted polyanilines, especially those obtained by the oxidative polymerization of p-substituted anilines, poly(1-aminonaphthalene) and its derivatives, carbocyclic and heterocyclic polyaryldiamines such as poly(p-phenylenediamine) and polydiaminoacridines, is presented. The mechanism of formation of polyaniline nanostructures is discussed. Recent approaches to the preparation of one-dimensional polyaniline nanostructures are concisely reviewed, with special attention paid to the template-free falling-pH method. Current and potential future applications of oligo/polyarylamines are briefly discussed.
AB  - U ovom revijalnom radu prikazan je napredak ostvaren u poslednjih nekoliko godina u sintezi, karakterizaciji i primeni nekih provodnih/poluprovodnih i redoks-aktivnih oligomera i polimera arilamina. Dat je kratak prikaz istorijskog razvoja pojedinih oblasti. Predstavljeni su postupci sinteze, struktura i svojstva polianilina, supstituisanih polianilina, posebno onih dobijenih oksidativnom polimerizacijom para-supstituisanih anilina, poli(1-aminonaftalena) i njegovih derivata, karbocikličnih i heterocikličnih poliarildiamina, kao npr. poli(para-fenilendiamina) i polidiaminoakridina. Diskutovan je mehanizam formiranja nanostruktura polianilina. Nedavno razvijeni sintetički postupci za dobijanje jednodimenzionalnih nanostruktura polianilina su koncizno prikazani, a posebna pažnja posvećena je metodama bez templata. Prikazan je i kratak pregled aktuelnih i potencijalnih budućih primena oligo/poliarilamina.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Progress in conducting/semiconducting and redox-active oligomers and polymers of arylamines
T1  - Napredak u istraživanjima provodnih/poluprovodnih i redoks aktivnih oligomera i polimera arilamina
VL  - 78
IS  - 11
SP  - 1809
EP  - 1836
DO  - 10.2298/JSC130809097J
ER  - 

@article{
author = "Janošević, Aleksandra and Marjanović, Budimir and Rakić, Aleksandra and Ćirić-Marjanović, Gordana",
year = "2013",
abstract = "Recent advances in synthesis, characterization and application of the selected conducting/semiconducting and redox-active oligomers and polymers of arylamines are reviewed. A brief historical background of the selected topics is given. The overview of the preparation, structure and properties of polyaniline, substituted polyanilines, especially those obtained by the oxidative polymerization of p-substituted anilines, poly(1-aminonaphthalene) and its derivatives, carbocyclic and heterocyclic polyaryldiamines such as poly(p-phenylenediamine) and polydiaminoacridines, is presented. The mechanism of formation of polyaniline nanostructures is discussed. Recent approaches to the preparation of one-dimensional polyaniline nanostructures are concisely reviewed, with special attention paid to the template-free falling-pH method. Current and potential future applications of oligo/polyarylamines are briefly discussed., U ovom revijalnom radu prikazan je napredak ostvaren u poslednjih nekoliko godina u sintezi, karakterizaciji i primeni nekih provodnih/poluprovodnih i redoks-aktivnih oligomera i polimera arilamina. Dat je kratak prikaz istorijskog razvoja pojedinih oblasti. Predstavljeni su postupci sinteze, struktura i svojstva polianilina, supstituisanih polianilina, posebno onih dobijenih oksidativnom polimerizacijom para-supstituisanih anilina, poli(1-aminonaftalena) i njegovih derivata, karbocikličnih i heterocikličnih poliarildiamina, kao npr. poli(para-fenilendiamina) i polidiaminoakridina. Diskutovan je mehanizam formiranja nanostruktura polianilina. Nedavno razvijeni sintetički postupci za dobijanje jednodimenzionalnih nanostruktura polianilina su koncizno prikazani, a posebna pažnja posvećena je metodama bez templata. Prikazan je i kratak pregled aktuelnih i potencijalnih budućih primena oligo/poliarilamina.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Progress in conducting/semiconducting and redox-active oligomers and polymers of arylamines, Napredak u istraživanjima provodnih/poluprovodnih i redoks aktivnih oligomera i polimera arilamina",
volume = "78",
number = "11",
pages = "1809-1836",
doi = "10.2298/JSC130809097J"
}

Janošević, A., Marjanović, B., Rakić, A.,& Ćirić-Marjanović, G.. (2013). Progress in conducting/semiconducting and redox-active oligomers and polymers of arylamines. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 78(11), 1809-1836.
https://doi.org/10.2298/JSC130809097J

Janošević A, Marjanović B, Rakić A, Ćirić-Marjanović G. Progress in conducting/semiconducting and redox-active oligomers and polymers of arylamines. in Journal of the Serbian Chemical Society. 2013;78(11):1809-1836.
doi:10.2298/JSC130809097J .

Janošević, Aleksandra, Marjanović, Budimir, Rakić, Aleksandra, Ćirić-Marjanović, Gordana, "Progress in conducting/semiconducting and redox-active oligomers and polymers of arylamines" in Journal of the Serbian Chemical Society, 78, no. 11 (2013):1809-1836,
https://doi.org/10.2298/JSC130809097J . .

TY  - JOUR
AU  - Uskoković-Marković, Snežana
AU  - Jelikić-Stankov, Milena
AU  - Holclajtner-Antunović, Ivanka
AU  - Đurđević, Predrag
PY  - 2013
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1908
AB  - In this review, Raman spectroscopy is described as a new and potentially powerful diagnostic tool in comparison to routine biochemical tests. Advanced instrumentation and new Raman spectroscopy techniques enable rapid and simultaneous identification and/or determination of several biochemical parameters, such as glucose, acetone, creatinine, urea, lipid profile, uric acid, total protein, etc., with a very low limit of detection. Raman spectroscopy could also be applied in molecule and cell characterization, as well as diagnostics of atherosclerosis in its early stage. Raman spectroscopy is nondestructive and could be applied to all kinds of samples, which simplifies the diagnostics of numerous diseases and pathologic states. Special attention is paid to literature data illustrating the application of Raman spectroscopy for transdermal glucose monitoring and cancer diagnostics.
AB  - U ovom prikazu opisana je primena Ramanske spektroskopije kao nove metode velikih mogućnosti u dijagnostici, u poređenju sa rutinskim biohemijskim testovima. Metoda je razvijena i usavršena za identifikaciju i/ili određivanje velikog broja biohemijskih parametara, kao što su glukoza, aceton, kreatinin, urea, lipidni profil, mokraćna kiselina, ukupni proteini i drugi, uz veoma nizak limit detekcije. Ramanska spektroskopija takođe se može primenjivati u molekulskoj i ćelijskoj karakterizaciji, kao i za dijagnostiku ranog stadijuma ateroskleroze. Ramanska spektroskopija je nedestruktivna i može se primenjivati na sve vrste uzoraka, što pojednostavljuje dijagnostiku brojnih bolesti i patoloških stanja. Posebna pažnja u radu je posvećena podacima iz literature koji ilustruju primenu Ramanske spektroskopije u transdermalnom monitoringu glukoze i dijagnostici kancera.
PB  - Društvo medicinskih biohemičara Srbije, Beograd i Versita
T2  - Journal of Medical Biochemistry
T1  - Raman spectroscopy as a new biochemical diagnostic tool
T1  - Ramanska spektroskopija kao novo biohemijsko dijagnostičko sredstvo
VL  - 32
IS  - 2
SP  - 96
EP  - 103
UR  - https://hdl.handle.net/21.15107/rcub_farfar_1908
ER  - 

@article{
author = "Uskoković-Marković, Snežana and Jelikić-Stankov, Milena and Holclajtner-Antunović, Ivanka and Đurđević, Predrag",
year = "2013",
abstract = "In this review, Raman spectroscopy is described as a new and potentially powerful diagnostic tool in comparison to routine biochemical tests. Advanced instrumentation and new Raman spectroscopy techniques enable rapid and simultaneous identification and/or determination of several biochemical parameters, such as glucose, acetone, creatinine, urea, lipid profile, uric acid, total protein, etc., with a very low limit of detection. Raman spectroscopy could also be applied in molecule and cell characterization, as well as diagnostics of atherosclerosis in its early stage. Raman spectroscopy is nondestructive and could be applied to all kinds of samples, which simplifies the diagnostics of numerous diseases and pathologic states. Special attention is paid to literature data illustrating the application of Raman spectroscopy for transdermal glucose monitoring and cancer diagnostics., U ovom prikazu opisana je primena Ramanske spektroskopije kao nove metode velikih mogućnosti u dijagnostici, u poređenju sa rutinskim biohemijskim testovima. Metoda je razvijena i usavršena za identifikaciju i/ili određivanje velikog broja biohemijskih parametara, kao što su glukoza, aceton, kreatinin, urea, lipidni profil, mokraćna kiselina, ukupni proteini i drugi, uz veoma nizak limit detekcije. Ramanska spektroskopija takođe se može primenjivati u molekulskoj i ćelijskoj karakterizaciji, kao i za dijagnostiku ranog stadijuma ateroskleroze. Ramanska spektroskopija je nedestruktivna i može se primenjivati na sve vrste uzoraka, što pojednostavljuje dijagnostiku brojnih bolesti i patoloških stanja. Posebna pažnja u radu je posvećena podacima iz literature koji ilustruju primenu Ramanske spektroskopije u transdermalnom monitoringu glukoze i dijagnostici kancera.",
publisher = "Društvo medicinskih biohemičara Srbije, Beograd i Versita",
journal = "Journal of Medical Biochemistry",
title = "Raman spectroscopy as a new biochemical diagnostic tool, Ramanska spektroskopija kao novo biohemijsko dijagnostičko sredstvo",
volume = "32",
number = "2",
pages = "96-103",
url = "https://hdl.handle.net/21.15107/rcub_farfar_1908"
}

Uskoković-Marković, S., Jelikić-Stankov, M., Holclajtner-Antunović, I.,& Đurđević, P.. (2013). Raman spectroscopy as a new biochemical diagnostic tool. in Journal of Medical Biochemistry
Društvo medicinskih biohemičara Srbije, Beograd i Versita., 32(2), 96-103.
https://hdl.handle.net/21.15107/rcub_farfar_1908

Uskoković-Marković S, Jelikić-Stankov M, Holclajtner-Antunović I, Đurđević P. Raman spectroscopy as a new biochemical diagnostic tool. in Journal of Medical Biochemistry. 2013;32(2):96-103.
https://hdl.handle.net/21.15107/rcub_farfar_1908 .

Uskoković-Marković, Snežana, Jelikić-Stankov, Milena, Holclajtner-Antunović, Ivanka, Đurđević, Predrag, "Raman spectroscopy as a new biochemical diagnostic tool" in Journal of Medical Biochemistry, 32, no. 2 (2013):96-103,
https://hdl.handle.net/21.15107/rcub_farfar_1908 .

TY  - JOUR
AU  - Milojević-Rakić, Maja
AU  - Janošević, Aleksandra
AU  - Krstić, Jugoslav
AU  - Nedić-Vasiljević, Bojana
AU  - Dondur, Vera
AU  - Ćirić-Marjanović, Gordana
PY  - 2013
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1867
AB  - Nanostructured and granular polyanilines (PANIs) and their composites with zeolite ZSM-5, synthesized by the oxidative polymerization of aniline in water and aqueous solution of sulfuric acid, are evaluated as adsorbents of the organic herbicide glyphosate [N-(phosphonomethyl)glycine] in aqueous solution. The protonated and deprotonated forms of synthesized materials were characterized by elemental and thermogravimetric analysis, scanning electron microscopy, FTIR, Raman and UV-Vis spectroscopies, X-ray powder diffraction, and nitrogen physisorption measurements. The adsorption isotherms of glyphosate on studied materials were best fitted by Freundlich and Langmuir-Freundlich models. The adsorption characteristics of the investigated PANIs and PANI/ZSM-5 composites were found to be much more influenced by the oxidation state and protonation level of PANI in the adsorbents then by the textural and morphological properties of materials. The highest adsorption of glyphosate among all investigated PANI and PANI/ZSM-5 samples, as well as pure ZSM-5, exhibited the deprotonated granular PANI which was synthesized in sulfuric acid medium (98.5 mg/g). High adsorption capacity also showed the deprotonated PANI/ZSM-5 composite with similar to 50% of zeolite (61.9 mg/g) and the protonated nanostructured PANI (59.9 mg/g), both materials prepared in water without added acid.
PB  - Elsevier Science BV, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - Polyaniline and its composites with zeolite ZSM-5 for efficient removal of glyphosate from aqueous solution
VL  - 180
SP  - 141
EP  - 155
DO  - 10.1016/j.micromeso.2013.06.025
ER  - 

@article{
author = "Milojević-Rakić, Maja and Janošević, Aleksandra and Krstić, Jugoslav and Nedić-Vasiljević, Bojana and Dondur, Vera and Ćirić-Marjanović, Gordana",
year = "2013",
abstract = "Nanostructured and granular polyanilines (PANIs) and their composites with zeolite ZSM-5, synthesized by the oxidative polymerization of aniline in water and aqueous solution of sulfuric acid, are evaluated as adsorbents of the organic herbicide glyphosate [N-(phosphonomethyl)glycine] in aqueous solution. The protonated and deprotonated forms of synthesized materials were characterized by elemental and thermogravimetric analysis, scanning electron microscopy, FTIR, Raman and UV-Vis spectroscopies, X-ray powder diffraction, and nitrogen physisorption measurements. The adsorption isotherms of glyphosate on studied materials were best fitted by Freundlich and Langmuir-Freundlich models. The adsorption characteristics of the investigated PANIs and PANI/ZSM-5 composites were found to be much more influenced by the oxidation state and protonation level of PANI in the adsorbents then by the textural and morphological properties of materials. The highest adsorption of glyphosate among all investigated PANI and PANI/ZSM-5 samples, as well as pure ZSM-5, exhibited the deprotonated granular PANI which was synthesized in sulfuric acid medium (98.5 mg/g). High adsorption capacity also showed the deprotonated PANI/ZSM-5 composite with similar to 50% of zeolite (61.9 mg/g) and the protonated nanostructured PANI (59.9 mg/g), both materials prepared in water without added acid.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Polyaniline and its composites with zeolite ZSM-5 for efficient removal of glyphosate from aqueous solution",
volume = "180",
pages = "141-155",
doi = "10.1016/j.micromeso.2013.06.025"
}

Milojević-Rakić, M., Janošević, A., Krstić, J., Nedić-Vasiljević, B., Dondur, V.,& Ćirić-Marjanović, G.. (2013). Polyaniline and its composites with zeolite ZSM-5 for efficient removal of glyphosate from aqueous solution. in Microporous and Mesoporous Materials
Elsevier Science BV, Amsterdam., 180, 141-155.
https://doi.org/10.1016/j.micromeso.2013.06.025

Milojević-Rakić M, Janošević A, Krstić J, Nedić-Vasiljević B, Dondur V, Ćirić-Marjanović G. Polyaniline and its composites with zeolite ZSM-5 for efficient removal of glyphosate from aqueous solution. in Microporous and Mesoporous Materials. 2013;180:141-155.
doi:10.1016/j.micromeso.2013.06.025 .

Milojević-Rakić, Maja, Janošević, Aleksandra, Krstić, Jugoslav, Nedić-Vasiljević, Bojana, Dondur, Vera, Ćirić-Marjanović, Gordana, "Polyaniline and its composites with zeolite ZSM-5 for efficient removal of glyphosate from aqueous solution" in Microporous and Mesoporous Materials, 180 (2013):141-155,
https://doi.org/10.1016/j.micromeso.2013.06.025 . .

TY  - JOUR
AU  - Janošević, Aleksandra
AU  - Pasti, Igor
AU  - Gavrilov, Nemanja
AU  - Mentus, Slavko
AU  - Krstić, Jugoslav
AU  - Mitrić, Miodrag
AU  - Travas-Sejdić, Jadranka
AU  - Ćirić-Marjanović, Gordana
PY  - 2012
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1726
AB  - Microporous conducting nitrogen-containing nanostructured carbon with excellent catalytic activity for the electrochemical synthesis of hydrogen peroxide was synthesized by the carbonization of self-assembled polyaniline 3,5-dinitrosalicylate nanorods. Carbonization was carried out by means of gradual heating in a nitrogen atmosphere up to 800 degrees C. Carbonized polyaniline nanorods containing 9.8 wt.% of nitrogen had a conductivity of 0.35 S cm(-1). The electrical characteristics, morphology, textural parameters, elemental composition, molecular structure and crystallinity of novel carbonized nanostructured polyaniline were investigated by conductivity measurements, scanning and transmission electron microscopies, nitrogen adsorption-desorption measurements, elemental microanalysis, XPS, FTIR and Raman spectroscopies, and XRD, respectively. The electrocatalytic activity of carbonized polyaniline nanorods towards oxygen reduction in alkaline conditions has been studied by the voltammetry with the rotating disk electrode.
PB  - Elsevier Science BV, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - Microporous conducting carbonized polyaniline nanorods: Synthesis, characterization and electrocatalytic properties
VL  - 152
SP  - 50
EP  - 57
DO  - 10.1016/j.micromeso.2011.12.002
ER  - 

@article{
author = "Janošević, Aleksandra and Pasti, Igor and Gavrilov, Nemanja and Mentus, Slavko and Krstić, Jugoslav and Mitrić, Miodrag and Travas-Sejdić, Jadranka and Ćirić-Marjanović, Gordana",
year = "2012",
abstract = "Microporous conducting nitrogen-containing nanostructured carbon with excellent catalytic activity for the electrochemical synthesis of hydrogen peroxide was synthesized by the carbonization of self-assembled polyaniline 3,5-dinitrosalicylate nanorods. Carbonization was carried out by means of gradual heating in a nitrogen atmosphere up to 800 degrees C. Carbonized polyaniline nanorods containing 9.8 wt.% of nitrogen had a conductivity of 0.35 S cm(-1). The electrical characteristics, morphology, textural parameters, elemental composition, molecular structure and crystallinity of novel carbonized nanostructured polyaniline were investigated by conductivity measurements, scanning and transmission electron microscopies, nitrogen adsorption-desorption measurements, elemental microanalysis, XPS, FTIR and Raman spectroscopies, and XRD, respectively. The electrocatalytic activity of carbonized polyaniline nanorods towards oxygen reduction in alkaline conditions has been studied by the voltammetry with the rotating disk electrode.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Microporous conducting carbonized polyaniline nanorods: Synthesis, characterization and electrocatalytic properties",
volume = "152",
pages = "50-57",
doi = "10.1016/j.micromeso.2011.12.002"
}

Janošević, A., Pasti, I., Gavrilov, N., Mentus, S., Krstić, J., Mitrić, M., Travas-Sejdić, J.,& Ćirić-Marjanović, G.. (2012). Microporous conducting carbonized polyaniline nanorods: Synthesis, characterization and electrocatalytic properties. in Microporous and Mesoporous Materials
Elsevier Science BV, Amsterdam., 152, 50-57.
https://doi.org/10.1016/j.micromeso.2011.12.002

Janošević A, Pasti I, Gavrilov N, Mentus S, Krstić J, Mitrić M, Travas-Sejdić J, Ćirić-Marjanović G. Microporous conducting carbonized polyaniline nanorods: Synthesis, characterization and electrocatalytic properties. in Microporous and Mesoporous Materials. 2012;152:50-57.
doi:10.1016/j.micromeso.2011.12.002 .

Janošević, Aleksandra, Pasti, Igor, Gavrilov, Nemanja, Mentus, Slavko, Krstić, Jugoslav, Mitrić, Miodrag, Travas-Sejdić, Jadranka, Ćirić-Marjanović, Gordana, "Microporous conducting carbonized polyaniline nanorods: Synthesis, characterization and electrocatalytic properties" in Microporous and Mesoporous Materials, 152 (2012):50-57,
https://doi.org/10.1016/j.micromeso.2011.12.002 . .

TY  - JOUR
AU  - Pavun, Leposava
AU  - Jelikić-Stankov, Milena
AU  - Malešev, Dušan
AU  - Uskoković-Marković, Snežana
AU  - Dimitrić-Marković, Jasmina
AU  - Đurđević, Predrag
AU  - Đikanović, Daniela
PY  - 2012
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1824
AB  - The spectrofluorometric method based on fluorescence ability of aluminium - hesperidin complex for the determination of hesperidin in orange juice is proposed. The linearity range of hesperidin in methanolicaqueous solution was 0.08 - 18.0 μg/mL with LOD and LOQ values as 0.023 μg/mL and 0.070 μg/mL, respectively, and recovery values in the range 97.8 - 99.7 %. Method was simplified by omitting any of surphactant agents usually applied in similar procedures, and successfully applied for the determination of hesperidin in orange juices commercially available on the Serbian market.
AB  - U radu je predložena spektrofluorimetrijska metoda za određivanje sadržaja hesperidina u sokovima od pomorandže zasnovana na sposobnosti fluorescencije kompleksa aluminijum - hesperidin. Utvrđena je oblast linearnosti za određivanje hesperidina u metanolno-vodenim rastvora od 0.08 do 18.0 μg/mL, pri čemu je LOD= 0.023 μg/mL i LOQ= 0.070 μg/mL, a recovery vrednost 97.8 - 99.7 %. Metoda je pojednostavljena izostavljanjem često korišćenih površinski aktivnih materija koje se koriste u sličnim procedurama i uspešno je primenjena za određivanje sadržaja hesperidina u sokovima od pomorandže prisutnim na tržištu Srbije.
PB  - Univerzitet u Kragujevcu - Agronomski fakultet, Čačak
T2  - Acta agriculturae Serbica
T1  - Fluorometric determination of hesperidin in orange juices available on Serbian market
T1  - Fluorometrijsko određivanje hesperidina u sokovima od pomorandže prisutnim na tržištu Srbije
VL  - 17
IS  - 34
SP  - 93
EP  - 103
UR  - https://hdl.handle.net/21.15107/rcub_farfar_1824
ER  - 

@article{
author = "Pavun, Leposava and Jelikić-Stankov, Milena and Malešev, Dušan and Uskoković-Marković, Snežana and Dimitrić-Marković, Jasmina and Đurđević, Predrag and Đikanović, Daniela",
year = "2012",
abstract = "The spectrofluorometric method based on fluorescence ability of aluminium - hesperidin complex for the determination of hesperidin in orange juice is proposed. The linearity range of hesperidin in methanolicaqueous solution was 0.08 - 18.0 μg/mL with LOD and LOQ values as 0.023 μg/mL and 0.070 μg/mL, respectively, and recovery values in the range 97.8 - 99.7 %. Method was simplified by omitting any of surphactant agents usually applied in similar procedures, and successfully applied for the determination of hesperidin in orange juices commercially available on the Serbian market., U radu je predložena spektrofluorimetrijska metoda za određivanje sadržaja hesperidina u sokovima od pomorandže zasnovana na sposobnosti fluorescencije kompleksa aluminijum - hesperidin. Utvrđena je oblast linearnosti za određivanje hesperidina u metanolno-vodenim rastvora od 0.08 do 18.0 μg/mL, pri čemu je LOD= 0.023 μg/mL i LOQ= 0.070 μg/mL, a recovery vrednost 97.8 - 99.7 %. Metoda je pojednostavljena izostavljanjem često korišćenih površinski aktivnih materija koje se koriste u sličnim procedurama i uspešno je primenjena za određivanje sadržaja hesperidina u sokovima od pomorandže prisutnim na tržištu Srbije.",
publisher = "Univerzitet u Kragujevcu - Agronomski fakultet, Čačak",
journal = "Acta agriculturae Serbica",
title = "Fluorometric determination of hesperidin in orange juices available on Serbian market, Fluorometrijsko određivanje hesperidina u sokovima od pomorandže prisutnim na tržištu Srbije",
volume = "17",
number = "34",
pages = "93-103",
url = "https://hdl.handle.net/21.15107/rcub_farfar_1824"
}

Pavun, L., Jelikić-Stankov, M., Malešev, D., Uskoković-Marković, S., Dimitrić-Marković, J., Đurđević, P.,& Đikanović, D.. (2012). Fluorometric determination of hesperidin in orange juices available on Serbian market. in Acta agriculturae Serbica
Univerzitet u Kragujevcu - Agronomski fakultet, Čačak., 17(34), 93-103.
https://hdl.handle.net/21.15107/rcub_farfar_1824

Pavun L, Jelikić-Stankov M, Malešev D, Uskoković-Marković S, Dimitrić-Marković J, Đurđević P, Đikanović D. Fluorometric determination of hesperidin in orange juices available on Serbian market. in Acta agriculturae Serbica. 2012;17(34):93-103.
https://hdl.handle.net/21.15107/rcub_farfar_1824 .

Pavun, Leposava, Jelikić-Stankov, Milena, Malešev, Dušan, Uskoković-Marković, Snežana, Dimitrić-Marković, Jasmina, Đurđević, Predrag, Đikanović, Daniela, "Fluorometric determination of hesperidin in orange juices available on Serbian market" in Acta agriculturae Serbica, 17, no. 34 (2012):93-103,
https://hdl.handle.net/21.15107/rcub_farfar_1824 .

TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka
AU  - Bajuk-Bogdanović, Danica
AU  - Popa, Alexandru
AU  - Uskoković-Marković, Snežana
PY  - 2012
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1717
AB  - The various molecular species formed by decomposition of 12-tungstophosphoric acid (WPA) in methanol/water solutions of different composition, and over a pH range 1-12, were identified by UV, FTIR, micro Raman and P-31 NMR spectroscopy. The dependence of stability on organic solvent amount, pH and concentration of WPA in solution is investigated in detail. It is shown that addition of methanol in aqueous solution of WPA with varied pH causes extension of the pH region where parent Keggin anion is stable. While Keggin anion is preserved in aqueous solution with pH  lt 2, in solution with 25% of methanol it is stable up to pH 2.5, in solution with 50% of methanol up to pH 3.5, and in solution with 75% of methanol Keggin anion is observed up to pH 4.5. Various molecular species, such as monovacant and trivacant lacunary Keggin structures and dimeric Wells-Dawson derivatives, are observed as a result of Keggin anion destruction with increasing of pH, but speciation in both aqueous and methanol/water solutions is similar. It is also shown that lacunary anions are less soluble in solutions with higher methanol content and with higher pH. In aqueous solution at pH >8, the solution contains only tungstates and phosphates with no precipitation. In solution with 25% of methanol, precipitate is formed at pH 8.0 and contains trivacant lacunary Keggin anion. In solution with 50% of methanol the precipitation is at pH 6.5, and in solution with 75% of methanol it is observed at pH 4.5, but in both solutions the precipitate contains monovacant lacunary anion as the main component.
PB  - Elsevier Science Sa, Lausanne
T2  - Inorganica Chimica Acta
T1  - Spectroscopic identification of molecular species of 12-tungstophosphoric acid in methanol/water solutions
VL  - 383
SP  - 26
EP  - 32
DO  - 10.1016/j.ica.2011.10.035
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka and Bajuk-Bogdanović, Danica and Popa, Alexandru and Uskoković-Marković, Snežana",
year = "2012",
abstract = "The various molecular species formed by decomposition of 12-tungstophosphoric acid (WPA) in methanol/water solutions of different composition, and over a pH range 1-12, were identified by UV, FTIR, micro Raman and P-31 NMR spectroscopy. The dependence of stability on organic solvent amount, pH and concentration of WPA in solution is investigated in detail. It is shown that addition of methanol in aqueous solution of WPA with varied pH causes extension of the pH region where parent Keggin anion is stable. While Keggin anion is preserved in aqueous solution with pH  lt 2, in solution with 25% of methanol it is stable up to pH 2.5, in solution with 50% of methanol up to pH 3.5, and in solution with 75% of methanol Keggin anion is observed up to pH 4.5. Various molecular species, such as monovacant and trivacant lacunary Keggin structures and dimeric Wells-Dawson derivatives, are observed as a result of Keggin anion destruction with increasing of pH, but speciation in both aqueous and methanol/water solutions is similar. It is also shown that lacunary anions are less soluble in solutions with higher methanol content and with higher pH. In aqueous solution at pH >8, the solution contains only tungstates and phosphates with no precipitation. In solution with 25% of methanol, precipitate is formed at pH 8.0 and contains trivacant lacunary Keggin anion. In solution with 50% of methanol the precipitation is at pH 6.5, and in solution with 75% of methanol it is observed at pH 4.5, but in both solutions the precipitate contains monovacant lacunary anion as the main component.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Inorganica Chimica Acta",
title = "Spectroscopic identification of molecular species of 12-tungstophosphoric acid in methanol/water solutions",
volume = "383",
pages = "26-32",
doi = "10.1016/j.ica.2011.10.035"
}

Holclajtner-Antunović, I., Bajuk-Bogdanović, D., Popa, A.,& Uskoković-Marković, S.. (2012). Spectroscopic identification of molecular species of 12-tungstophosphoric acid in methanol/water solutions. in Inorganica Chimica Acta
Elsevier Science Sa, Lausanne., 383, 26-32.
https://doi.org/10.1016/j.ica.2011.10.035

Holclajtner-Antunović I, Bajuk-Bogdanović D, Popa A, Uskoković-Marković S. Spectroscopic identification of molecular species of 12-tungstophosphoric acid in methanol/water solutions. in Inorganica Chimica Acta. 2012;383:26-32.
doi:10.1016/j.ica.2011.10.035 .

Holclajtner-Antunović, Ivanka, Bajuk-Bogdanović, Danica, Popa, Alexandru, Uskoković-Marković, Snežana, "Spectroscopic identification of molecular species of 12-tungstophosphoric acid in methanol/water solutions" in Inorganica Chimica Acta, 383 (2012):26-32,
https://doi.org/10.1016/j.ica.2011.10.035 . .

TY  - JOUR
AU  - Marjanović, Budimir
AU  - Juranić, Ivan O.
AU  - Ćirić-Marjanović, Gordana
AU  - Mojović, M
AU  - Pasti, Igor
AU  - Janošević, Aleksandra
AU  - Trchova, Miroslava
AU  - Holler, P
AU  - Horský, J
PY  - 2012
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1806
AB  - Novel electroactive paramagnetic ethacridine oligomers were synthesized by the oxidation of ethacridine lactate with ammonium peroxydisulfate in acidic aqueous solution. The oxidative coupling of ethacridine was proved by gel permeation chromatography and MALDI-TOF mass spectrometry demonstrating the presence of oligomeric chains. Theoretical study of the mechanism of oxidation of ethacridine has been based on the semi-empirical quantum chemical computations of heat of formation and ionization energy of ethacridine, protonated ethacridine, generated reactive species and reaction intermediates, taking into account influence of pH and solvation effects. It was revealed that the prevalent ethacridine dimers are N(C6)C5 coupled. The influence of oxidant to monomer mole ratio on the molecular structure and the morphology of ethacridine oligomers has been studied by elemental analysis, FTIR, Raman, EPR and UV-Visible spectroscopies, MALDI-TOF mass spectrometry and scanning electron microscopy. Besides unoxidized monomeric units as prevalent, oligoethacridines contain the iminoquinonoid and newly formed fused phenazine units. The electroactivity of ethacridine oligomers was investigated by cyclic voltammetry.
T2  - Reactive and Functional Polymers
T1  - Chemical oxidative polymerization of ethacridine
VL  - 72
IS  - 1
SP  - 25
EP  - 35
DO  - 10.1016/j.reactfunctpolym.2011.10.002
ER  - 

@article{
author = "Marjanović, Budimir and Juranić, Ivan O. and Ćirić-Marjanović, Gordana and Mojović, M and Pasti, Igor and Janošević, Aleksandra and Trchova, Miroslava and Holler, P and Horský, J",
year = "2012",
abstract = "Novel electroactive paramagnetic ethacridine oligomers were synthesized by the oxidation of ethacridine lactate with ammonium peroxydisulfate in acidic aqueous solution. The oxidative coupling of ethacridine was proved by gel permeation chromatography and MALDI-TOF mass spectrometry demonstrating the presence of oligomeric chains. Theoretical study of the mechanism of oxidation of ethacridine has been based on the semi-empirical quantum chemical computations of heat of formation and ionization energy of ethacridine, protonated ethacridine, generated reactive species and reaction intermediates, taking into account influence of pH and solvation effects. It was revealed that the prevalent ethacridine dimers are N(C6)C5 coupled. The influence of oxidant to monomer mole ratio on the molecular structure and the morphology of ethacridine oligomers has been studied by elemental analysis, FTIR, Raman, EPR and UV-Visible spectroscopies, MALDI-TOF mass spectrometry and scanning electron microscopy. Besides unoxidized monomeric units as prevalent, oligoethacridines contain the iminoquinonoid and newly formed fused phenazine units. The electroactivity of ethacridine oligomers was investigated by cyclic voltammetry.",
journal = "Reactive and Functional Polymers",
title = "Chemical oxidative polymerization of ethacridine",
volume = "72",
number = "1",
pages = "25-35",
doi = "10.1016/j.reactfunctpolym.2011.10.002"
}

Marjanović, B., Juranić, I. O., Ćirić-Marjanović, G., Mojović, M., Pasti, I., Janošević, A., Trchova, M., Holler, P.,& Horský, J.. (2012). Chemical oxidative polymerization of ethacridine. in Reactive and Functional Polymers, 72(1), 25-35.
https://doi.org/10.1016/j.reactfunctpolym.2011.10.002

Marjanović B, Juranić IO, Ćirić-Marjanović G, Mojović M, Pasti I, Janošević A, Trchova M, Holler P, Horský J. Chemical oxidative polymerization of ethacridine. in Reactive and Functional Polymers. 2012;72(1):25-35.
doi:10.1016/j.reactfunctpolym.2011.10.002 .

Marjanović, Budimir, Juranić, Ivan O., Ćirić-Marjanović, Gordana, Mojović, M, Pasti, Igor, Janošević, Aleksandra, Trchova, Miroslava, Holler, P, Horský, J, "Chemical oxidative polymerization of ethacridine" in Reactive and Functional Polymers, 72, no. 1 (2012):25-35,
https://doi.org/10.1016/j.reactfunctpolym.2011.10.002 . .