FTIR INVESTIGATION OF THE POLYPYRROLE OXIDATION IN NA2SO4 AND NANO3 AQUEOUS-SOLUTIONS

被引：43

作者：

MAIA, G

TICIANELLI, EA

NART, FC

机构：

[1] Instituto de Física e Química de São Carlos, Universidade de São Paulo, 13560-970 São Carlos (SP)

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1994年 / 186卷

关键词：

POLYPYRROLE FILMS; ELECTROCHEMICAL OXIDATION; CYCLIC VOLTAMMETRY; FTIR SPECTRA; MECHANISM OF POLYMER CONDUCTION;

D O I：

10.1524/zpch.1994.186.Part_2.245

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 oxidation of polypyrrole films was studied by in situ FTIR spectroscopy and cyclic voltammetry in aqueous NaNO3 and Na2SO4 solutions. The charge injection in the polymer produces a pronounced change of the position of some vibrational modes; an inflection in the slope of the frequency-potential curves at 0 mV vs SCE is observed for some of these analysed bands. These results are in quite good agreement with theoretical calculations presented in the literature. It is also observed that the spectroscopic band shift of the 1223 cm-1 band correlates well with the voltammetric experiments.

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页码：245 / 257

页数：13

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