Simultaneous oxidation of aniline and tannic acid with peroxydisulfate: self-assembly of oxidation products from nanorods to microspheres

0376687 - ÚMCH 2013 RIV CH eng J - Článek v odborném periodiku
Janoševic, A. - Ciric-Marjanovic, G. - Šljukic Paunkovic, B. - Pašti, I. - Trifunovic, S. - Marjanovic, B. - Stejskal, Jaroslav
Simultaneous oxidation of aniline and tannic acid with peroxydisulfate: self-assembly of oxidation products from nanorods to microspheres.
Synthetic Metals. Roč. 162, 9/10 (2012), s. 843-856. ISSN 0379-6779. E-ISSN 0379-6779
Grant CEP: GA ČR GA202/09/1626
Výzkumný záměr: CEZ:AV0Z40500505
Institucionální podpora: RVO:61389013
Klíčová slova: copolymerization * aniline * tannic acid
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 2.109, rok: 2012

The oxidation of aniline with ammonium peroxydisulfate (APS) in aqueous solution of the plant-derived polyphenol, tannic acid, is reported. The effect of initial mole ratios [tannic acid]/[aniline] and [APS]/[aniline] on molecular structure, morphology, conductivity, and electroactivity of synthesized materials (PANI–TA) was investigated by UV–Vis, FTIR, Raman and EPR spectroscopies, scanning and transmission electron microscopies (SEM and TEM), conductivity measurements, and cyclic voltammetry, respectively. PANI–TA nanorods with the average diameter of 70–100 nm and conductivity of 1 × 10−3 S cm−1 were synthesized at [tannic acid]/[aniline] = 0.01 and [APS]/[aniline] = 1, while nonconductive, solid microspheres were obtained at [tannic acid]/[aniline] = 0.1 and [APS]/[aniline] = 2. The mechanism of the early stages of simultaneous oxidation of aniline and tannic acid has been computationally studied by the RM1/COSMO method.
Trvalý link: http://hdl.handle.net/11104/0006966