Separation of the ultraviolet-visible spectra of the redox states of conducting polymers by simultaneous use of electron-spin resonance and ultraviolet-visible spectroscopy

被引：42

作者：

Neudeck, A ^{[1
]}

Petr, A ^{[1
]}

Dunsch, L ^{[1
]}

机构：

[1] Inst Festkorper & Werkstofforsch Dresden, Inst Festkorperforsch, Abt Elektrochem & Leitfahige Polymere, D-01069 Dresden, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 06期

关键词：

D O I：

10.1021/jp983383k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrochemical oxidation of polyaniline (PAni) films on gold electrodes is studied by simultaneous electron spin resonance (ESR) and UV-vis spectroelectrochemistry. The technique permits the separation of the superimposed UV-vis spectra of three redox states: the protonated reduced polyaniline chains, the deprotonated polaronic state, and the bipolaronic state. The separated UV-vis spectra as well as the potential dependence of each redox state concentration enables a more precise determination of the energy levels and the stability of paramagnetic species.

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页码：912 / 919

页数：8

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