CHARGE-TRANSPORT AND ELECTRON LOCALIZATION IN POLYANILINE DERIVATIVES

被引:55
作者
PINTO, NJ
KAHOL, PK
MCCORMICK, BJ
DALAL, NS
WAN, H
机构
[1] WICHITA STATE UNIV,NATL INST AVIAT RES,WICHITA,KS 67208
[2] WICHITA STATE UNIV,DEPT CHEM,WICHITA,KS 67208
[3] W VIRGINIA UNIV,DEPT CHEM,MORGANTOWN,WV 26506
来源
PHYSICAL REVIEW B | 1994年 / 49卷 / 19期
关键词
D O I
10.1103/PhysRevB.49.13983
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Electrical conductivity, magnetic susceptibility, and electron-spin-resonance studies are reported in polyaniline and its derivatives poly(o-toluidine), poly(o-ethylaniline), and poly(o-propylaniline). It is shown that substituents on the C6 rings of the polymer backbone lead to decreased conductivity, decreased Pauli susceptibility, and an increased number of Curie spins. Also reflecting these features are electron-spin-resonance line shapes, which transform from Lorentzian for polyaniline toward Gaussian for poly(o-propylaniline). These results are interpreted in terms of increased electron localization caused by increased interchain disorder. Furthermore, evidence of electron-electron correlations is presented for poly(o-propylaniline).
引用
收藏
页码:13983 / 13986
页数:4
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