Raman characterization of polyaniline induced conformational changes

被引：86

作者：

da Silva, JEP ^{[1
]}

de Torresi, SIC ^{[1
]}

de Faria, DLA ^{[1
]}

Temperini, MLA ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05599970 Sao Paulo, Brazil

来源：

SYNTHETIC METALS | 1999年 / 101卷 / 1-3期

基金：

巴西圣保罗研究基金会;

关键词：

polyaniline; Raman spectroscopy; secondary doping; ESR;

D O I：

10.1016/S0379-6779(98)01300-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Conformational changes induced by temperature and secondary doping process, were followed by Raman resonance spectroscopy and ESR measurements. Raman results give complementary data about the secondary doping process showing that together with the structural change of the polymeric chains, there is also a chemical transformation of quinoid segments: into semiquinoid units. When the temperature is raised, changes in Raman spectra are coincident with those observed in secundarily doped samples, showing in this way, the importance of polymer conformation in the conductive behaviour. ESR measurements confirm the increasing amount of free radicals when the PANI/CSA films are treated with m-cresol in good agreement with Raman results.

引用

页码：834 / 835

页数：2

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