New analytical approach to the insulator-metal transition in conductive polyaniline

被引：15

作者：

Fedorko, P. ^{[1
,2
]}

Trznadel, M. ^{[2
,3
]}

Pron, A. ^{[2
]}

Djurado, D. ^{[2
]}

Planes, J. ^{[2
]}

Travers, J. P. ^{[2
]}

机构：

[1] Slovak Univ Technol Bratislava, Dept Chem Phys, Fac Chem & Food Technol, SK-81237 Bratislava, Slovakia

[2] CEA, INAC SPrAM LEMOH, F-38054 Grenoble 9, France

[3] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland

来源：

SYNTHETIC METALS | 2010年 / 160卷 / 15-16期

关键词：

Conducting polymers; Insulator-metal transition; Polyaniline; Plasticizer; Conductivity; Metallic state; CRITICAL REGIME; POLYMERS; TRANSPORT; MODEL;

D O I：

10.1016/j.synthmet.2010.05.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new empirical formula describing the temperature dependence of the conductivity of polyaniline films in the metallic regime close to the insulator-metal transition at temperature below 30 K is deduced from the analysis of the temperature dependence of the reduced activation energy. Its elaboration is based on a careful study of electrical transport properties of camphorsulfonic acid-doped polyaniline (PANI(CSA)(0.5)) films, containing increasing amounts of triphenyl phosphate (TPP) plasticizer. The use of this three component system (polymer, protonating agent, plasticizer) and control of the amount of adsorbed water enable precise tuning of the electrical transport properties in the solution cast films, in this manner providing the set of experimental data, covering the insulating, critical and metallic regimes, necessary for the elaboration of the proposed new empirical formula. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1668 / 1671

页数：4

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