Potentiometric behavior of electrodes based on overoxidized polypyrrole films

被引：42

作者：

Ersöz, A ^{[1
]}

Gavalas, VG ^{[1
]}

Bachas, LG ^{[1
]}

机构：

[1] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2002年 / 372卷 / 7-8期

基金：

美国国家航空航天局;

关键词：

overoxidized polypyrrole; potentiometric behavior; templating effect;

D O I：

10.1007/s00216-002-1262-6

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Electrodes based on oxidized polypyrrole films have potentiometric selectivity toward anions. When the films are overoxidized, however, electron-rich groups are introduced on to the polymer chains, reversing the selectivity of the electrodes from anionic to cationic. In this study, electrochemically overoxidized polypyrrole film electrodes were prepared, and the conditions for film formation that lead to near-Nernstian potentiometric response were investigated. It was found that the doping ion, overoxidation solution, and pH affect the response of these electrodes. Redox interference is significantly lower for the overoxidized polypyrrole films than for polypyrrole electrodes.

引用

收藏

页码：786 / 790

页数：5

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