Low pressure effect in the electrical conductivity of doped polypyrrole

被引：15

作者：

Fedorko, P ^{[1
]}

Skakalova, V ^{[1
]}

机构：

[1] Slovak Univ Technol Bratislava, Fac Chem Technol, Dept Chem Phys, Bratislava 81237, Slovakia

来源：

SYNTHETIC METALS | 1998年 / 94卷 / 03期

关键词：

polypyrrole; electrical conductivity; low pressure effects; conformation; glass transition; piezochromism;

D O I：

10.1016/S0379-6779(98)00015-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the first data of the pressure dependence of the electrical conductivity of BF4--doped polypyrrole below atmospheric pressure. The pressure dependence has characteristics of a phase transition and is interpreted as a conformational coil-rod transition. The time response of the conductivity to a sudden increase of pressure, the existence of a glass transition and the pressure dependence of the optical and IR spectra support this interpretation. The pressure effect should be considered in experiments with polypyrrole gas sensors. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：279 / 283

页数：5

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