OBSERVATION OF CROSSOVER FROM 3-DIMENSIONAL TO 2-DIMENSIONAL VARIABLE-RANGE-HOPPING IN TEMPLATE-SYNTHESIZED POLYPYRROLE AND POLYANILINE

被引：41

作者：

SPATZ, JP

LORENZ, B

WEISHAUPT, K

HOCHHEIMER, HD

MENON, V

PARTHASARATHY, R

MARTIN, CR

BECHTOLD, J

HOR, PH

机构：

[1] COLORADO STATE UNIV,DEPT CHEM,FT COLLINS,CO 80523

[2] UNIV HOUSTON,TEXAS CTR SUPERCOND,HOUSTON,TX 77204

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.50.14888

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electronically conductive polymers can be synthesized within the pores of microporous membranes to yield microscopic tubules of the polymer. We have investigated the temperature dependence of resistance of thin films prepared from microtubules composed of polyaniline and polypyrrole. All resistance data obtained followed the Mott variable-range hopping (MVRH) model. However, films prepared from large-diameter tubules (400 nm) showed three-dimensional (3D) MVRH, while films prepared from small-diameter tubules (100 nm) showed 2D MVRH. Hence, we have demonstrated the ability to reproducibly vary the dimensionality of conduction in a conductive polymer film. © 1994 The American Physical Society.

引用

页码：14888 / 14892

页数：5

共 16 条

[1] CONJUGATION LENGTH DEPENDENT TRANSPORT IN CONDUCTING POLYMERS FROM A RESISTOR NETWORK MODEL [J].