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Effects of anions on electrochemical formation and overoxidation of polyaniline

被引：96
作者：
Tang, HQ
Kitani, A
Shiotani, M
机构：
[1] Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashihiroshima 739
来源：
ELECTROCHIMICA ACTA | 1996年 / 41卷 / 09期
关键词：
polyaniline; electrosynthesis; overoxidation; anion effects;
D O I：
10.1016/0013-4686(95)00408-4
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Electrochemical formation and overoxidation of polyaniline (PAn) were investigated in solutions containing different anions. The anions promoted PAn growth in the order, H2SO4 > HCl > HClO4. The growth rate of PAn in the presence of two different types of anion was governed by the anion with lesser promoting effect. The addition of a small amount of HClO4 into the H2SO4 solution greatly inhibited the initial monomer oxidation and the growth of the polymer. Similar promoting/depressing effects of anions were observed on electrochemical degradation of PAn films. The effects of anions were possibly related to the stability of complexes between the anion and protonated monomer, and the anion and protonated PAn chains. Copyright (C) 1996 Elsevier Science Ltd.
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页码：1561 / 1567
页数：7
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