THE CHARGE-POTENTIAL RELATIONSHIP IN POLYCONJUGATED CONDUCTING POLYMERS - DETERMINATION OF EO-VALUES AND N-VALUES FOR POLYPYRROLE AND POLYTHIOPHENE

被引：15

作者：

ZOTTI, G

SCHIAVON, G

COMISSO, N

机构：

[1] Consiglio Nazionale delle Ricerche, Istituto di Polarografia ed Elettrochimica Preparativa, 35020 Padova

来源：

ELECTROCHIMICA ACTA | 1990年 / 35卷 / 11-12期

关键词：

18;

D O I：

10.1016/0013-4686(90)87084-F

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Experimental charge-voltage relationships for reversible oxidation of polypyrrole (PP) and polythiophene (PT) in acetonitrile were obtained. Curve-fitting analysis according to Feldberg's model for mixed faradaic and capacitive contributions provides the E0 and n-values of these materials. PP shows a single process at E0 = -0.66 V (vs ag/Ag+) with n = 0.6, while PT shows two isoelectronic processes at E0 = 0.28 and 0.58 V with n = 0.3. The single process for PP is due to merging of two one-electron processes involving polaron and bipolaron species. PT is suggested to be involved in 0.5-electron steps possibly due to dimeric associations in the polymer chain. © 1990.

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页码：1815 / 1819

页数：5

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