DYNAMICS OF FARADAIC PROCESSES IN POLYPYRROLE POLYSTYRENESULFONATE COMPOSITE FILMS IN THE PRESENCE AND ABSENCE OF A REDOX SPECIES IN AQUEOUS-SOLUTIONS

被引：29

作者：

AMEMIYA, T ^{[1
]}

HASHIMOTO, K ^{[1
]}

FUJISHIMA, A ^{[1
]}

机构：

[1] UNIV TOKYO, FAC ENGN, DEPT SYNTHET CHEM, BUNKYO KU, TOKYO 113, JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 16期

关键词：

D O I：

10.1021/j100118a041

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：

Electrochemical impedance and color impedance (electromodulated optical transmittance) methods were used to separate two processes: a faradaic process in polypyrrole films and a redox process of [Fe(CN)6]3-/4- dissolved in a solution. The modulated transmittance (T = DELTAT/DELTAE) at 700 nm followed the modulation of faradaic charge only in the films. Analysis of the capacitance (C = DELTAQ/DELTAE) and the modulated transmittance data using an equivalent circuit has revealed that the faradaic process in the films and the redox reaction of the redox species occur in parallel. The latter reaction is found to occur at the film/solution interface.

引用

页码：4192 / 4195

页数：4

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