MAGNETIC-SUSCEPTIBILITY OF ONE-DIMENSIONAL METALLIC CHAINS IN SOLUTION

被引：18

作者：

FITE, C

CAO, Y

HEEGER, AJ

机构：

[1] Institute for Polymers and Organic Solids, University of California, Santa Barbara

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 73卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0038-1098(90)90248-A

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the results of electron spin resonance (ESR) measurements of the magnetic susceptibility (χ) of polyaniline in solution in concentrated sulfuric acid and at low temperatures in the matrix of the frozen glass. The results indicate that in solution, the magnetic susceptibility is decreased with respect to χ in the solid state by more than two orders of magnitude. Since dissolution weakens the interchain coupling while leaving the macromolecular chains intact, polyaniline chains in sulfuric acid can be considered as one-dimensional (1d) metals. Accordingly, we have interpreted the decrease in χ as arising from the Peierls' instability; the 1d metallic chains distort to form a superlattice with an associated energy gap in the excitation spectrum. © 1990.

引用

页码：607 / 609

页数：3

共 15 条

[1] ELECTRICALLY-CONDUCTIVE FIBERS OF POLYANILINE SPUN FROM SOLUTIONS IN CONCENTRATED SULFURIC-ACID [J].