ELECTRON-SPIN-RESONANCE STUDY OF INTRINSIC PARAMAGNETISM OF SOLUBLE POLYANILINE PERCHLORATES

被引：22

作者：

IIDA, M ^{[1
]}

ASAJI, T ^{[1
]}

INOUE, M ^{[1
]}

GRIJALVA, H ^{[1
]}

INOUE, MB ^{[1
]}

NAKAMURA, D ^{[1
]}

机构：

[1] UNIV SONORA, CTR INVEST POLIMER & MAT, SONORA, MEXICO

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1991年 / 64卷 / 05期

关键词：

D O I：

10.1246/bcsj.64.1509

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An ESR study was carried out on two polyaniline perchlorates prepared by different chemical methods: Soluble perchlorate I prepared by the use of copper(II) perchlorate as an oxidative coupling agent, and perchlorate II (corresponding to polyemeraldine perchlorate) obtained by treating a polymer base with perchloric acid. The ESR signal intensity of perchlorate I shows a thermally activated temperature dependence at temperatures between 95 and 300 K. The ESR signal intensity of perchlorate II was temperature-independent. When this polymer adsorbed oxygen, the ESR signal showed a thermally activated paramagnetism resembling that of perchlorate I. These paramagnetic properties can be explained by polaron spins that are antiferromagnetically coupled with each other, and are different from the Pauli-type paramagnetism. This suggests that the charge-transport cannot be explained by the migration of paramagnetic polarons along a polymer chain alone.

引用

页码：1509 / 1513

页数：5

共 14 条

[1] POLYANILINE - A HISTORICAL SURVEY [J].