TY  - JOUR
AU  - Janošević-Ležaić, Aleksandra
AU  - Luginbuhl, Sandra
AU  - Bajuk-Bogdanović, Danica
AU  - Pasti, Igor
AU  - Kissner, Reinhard
AU  - Rakvin, Boris
AU  - Walde, Peter
AU  - Ćirić-Marjanović, Gordana
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2707
AB  - We report about the first Raman spectroscopy study of a vesicle-assisted enzyme-catalyzed oligomerization reaction. The aniline dimer N-phenyl-1,4-phenylenediamine (=p-aminodiphenylamine, PADPA) was oxidized and oligomerized with Trametes versicolor laccase and dissolved O-2 in the presence of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) vesicles (80-100 nm diameter) as templates. The conversion of PADPA into oligomeric products, poly(PADPA), was monitored during the reaction by in situ Raman spectroscopy. The results obtained are compared with UV/vis/NIR and EPR measurements. All three complementary methods indicate that at least some of the poly(PADPA) products, formed in the presence of AOT vesicles, resemble the conductive emeraldine salt form of polyaniline (PANI-ES). The Raman measurements also show that structural units different from those of "ordinary" PANI-ES are present too. Without vesicles PANI-ES-like products are not obtained. For the first time, the as-prepared stable poly(PADPA)-AOT vesicle suspension was used directly to coat electrodes (without product isolation) for investigating redox activities of poly(PADPA) by cyclic voltammetry (CV). CV showed that poly(PADPA) produced with vesicles is redox active not only at pH 1.1-as expected for PANI-ES-but also at pH 6.0, unlike PANI-ES and poly(PADPA) synthesized without vesicles. This extended pH range of the redox activity of poly(PADPA) is important for applications.
PB  - Nature Publishing Group, London
T2  - Scientific World Journal
T1  - Insight into the template effect of vesicles on the laccase-catalyzed oligomerization of N-phenyl-1,4-phenylenediamine from Raman spectroscopy and cyclic voltammetry measurements
VL  - 6
DO  - 10.1038/srep30724
ER  - 

@article{
author = "Janošević-Ležaić, Aleksandra and Luginbuhl, Sandra and Bajuk-Bogdanović, Danica and Pasti, Igor and Kissner, Reinhard and Rakvin, Boris and Walde, Peter and Ćirić-Marjanović, Gordana",
year = "2016",
abstract = "We report about the first Raman spectroscopy study of a vesicle-assisted enzyme-catalyzed oligomerization reaction. The aniline dimer N-phenyl-1,4-phenylenediamine (=p-aminodiphenylamine, PADPA) was oxidized and oligomerized with Trametes versicolor laccase and dissolved O-2 in the presence of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) vesicles (80-100 nm diameter) as templates. The conversion of PADPA into oligomeric products, poly(PADPA), was monitored during the reaction by in situ Raman spectroscopy. The results obtained are compared with UV/vis/NIR and EPR measurements. All three complementary methods indicate that at least some of the poly(PADPA) products, formed in the presence of AOT vesicles, resemble the conductive emeraldine salt form of polyaniline (PANI-ES). The Raman measurements also show that structural units different from those of "ordinary" PANI-ES are present too. Without vesicles PANI-ES-like products are not obtained. For the first time, the as-prepared stable poly(PADPA)-AOT vesicle suspension was used directly to coat electrodes (without product isolation) for investigating redox activities of poly(PADPA) by cyclic voltammetry (CV). CV showed that poly(PADPA) produced with vesicles is redox active not only at pH 1.1-as expected for PANI-ES-but also at pH 6.0, unlike PANI-ES and poly(PADPA) synthesized without vesicles. This extended pH range of the redox activity of poly(PADPA) is important for applications.",
publisher = "Nature Publishing Group, London",
journal = "Scientific World Journal",
title = "Insight into the template effect of vesicles on the laccase-catalyzed oligomerization of N-phenyl-1,4-phenylenediamine from Raman spectroscopy and cyclic voltammetry measurements",
volume = "6",
doi = "10.1038/srep30724"
}

Janošević-Ležaić, A., Luginbuhl, S., Bajuk-Bogdanović, D., Pasti, I., Kissner, R., Rakvin, B., Walde, P.,& Ćirić-Marjanović, G.. (2016). Insight into the template effect of vesicles on the laccase-catalyzed oligomerization of N-phenyl-1,4-phenylenediamine from Raman spectroscopy and cyclic voltammetry measurements. in Scientific World Journal
Nature Publishing Group, London., 6.
https://doi.org/10.1038/srep30724

Janošević-Ležaić A, Luginbuhl S, Bajuk-Bogdanović D, Pasti I, Kissner R, Rakvin B, Walde P, Ćirić-Marjanović G. Insight into the template effect of vesicles on the laccase-catalyzed oligomerization of N-phenyl-1,4-phenylenediamine from Raman spectroscopy and cyclic voltammetry measurements. in Scientific World Journal. 2016;6.
doi:10.1038/srep30724 .

Janošević-Ležaić, Aleksandra, Luginbuhl, Sandra, Bajuk-Bogdanović, Danica, Pasti, Igor, Kissner, Reinhard, Rakvin, Boris, Walde, Peter, Ćirić-Marjanović, Gordana, "Insight into the template effect of vesicles on the laccase-catalyzed oligomerization of N-phenyl-1,4-phenylenediamine from Raman spectroscopy and cyclic voltammetry measurements" in Scientific World Journal, 6 (2016),
https://doi.org/10.1038/srep30724 . .