SPIN AND SPINLESS CONDUCTIVITY IN POLYPYRROLE - EVIDENCE FOR MIXED-VALENCE CONDUCTION

被引：49

作者：

ZOTTI, G

SCHIAVON, G

机构：

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

来源：

CHEMISTRY OF MATERIALS | 1991年 / 3卷 / 01期

关键词：

D O I：

10.1021/cm00013a017

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：

In situ conductivity of polypyrrole (as tosylate) as a function of oxidative doping level attains a maximum at three-quarters the total oxidation charge, and the relevant in situ ESR signal corresponds to an equal concentration of spin-carrying (polaron) and spinless (bipolaron) species. Results are explained on the basis of mixed-valence conduction. Bipolaron conduction, taking the place of polaron-bipolaron conductivity at higher oxidation levels, accounts for persisting conductivity in the high-oxidation state.

引用

页码：62 / 65

页数：4

共 23 条

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