FarFaR - Pharmacy Repository
University of Belgrade, Faculty of Pharmacy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   FarFaR
  • Pharmacy
  • Radovi istraživača / Researchers’ publications
  • View Item
  •   FarFaR
  • Pharmacy
  • Radovi istraživača / Researchers’ publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Polyaniline tannate - Synthesis, characterization and electrochemical assessment of superoxide anion radical scavenging activity

Authorized Users Only
2014
Authors
Janošević-Ležaić, Aleksandra
Pasti, Igor
Vukomanović, Marija
Ćirić-Marjanović, Gordana
Article (Published version)
Metadata
Show full item record
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.

Keywords:
Copolymerization / Aniline / Tannic acid / Superoxide anion radical scavenging / Cyclic voltammetry
Source:
Electrochimica Acta, 2014, 142, 92-100
Publisher:
  • Pergamon-Elsevier Science Ltd, Oxford
Funding / projects:
  • Electroconducting and redox-active polymers and oligomers: synthesis, structure, properties and applications (RS-172043)

DOI: 10.1016/j.electacta.2014.07.073

ISSN: 0013-4686

WoS: 000343626400012

Scopus: 2-s2.0-84906658258
[ Google Scholar ]
7
4
URI
https://farfar.pharmacy.bg.ac.rs/handle/123456789/2135
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Pharmacy
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 . .

DSpace software copyright © 2002-2015  DuraSpace
About FarFaR - Pharmacy Repository | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceCommunitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About FarFaR - Pharmacy Repository | Send Feedback

OpenAIRERCUB