POLYANILINE, AIR-STABLE ORGANIC METAL - FACT, NO LONGER FICTION

被引：21

作者：

MONKMAN, AP

ADAMS, PN

LAUGHLIN, PJ

HOLLAND, ER

机构：

[1] Optical and Electroactive Materials Research Group Department of Physics, University of Durham, Durham, DHI 3LE, South Road

来源：

SYNTHETIC METALS | 1995年 / 69卷 / 1-3期

关键词：

D O I：

10.1016/0379-6779(94)02411-Q

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Via improved chemistry we have increased the maximum attainable conductivity in oriented polyaniline. D.C. conductivity's approaching 10(4) Scm(-1) have been measured. Temperature dependent transport measurements reveal that our new polyaniline behaves in a similar fashion to high conductivity polyacetylene and can be modelled in the same way. However we do observe strongly temperature dependent electrical anisotropy below a characteristic temperature of ca. 150 K Thermopower measurements indicate that the system is metallic in the parallel direction but also, we find that the thermopower is anisotropic. Thermopower in the perpendicular direction changes sign at around 200 K. This we take to indicate that the interchain conduction process involves phonons, and hence a different transport mechanism must control it as compared to the metallic intrachain transport.

引用

页码：183 / 186

页数：4

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