POLYANILINE - CONFORMATIONAL-CHANGES INDUCED IN SOLUTION BY VARIATION OF SOLVENT AND DOPING LEVEL

被引:136
作者
AVLYANOV, JK [1 ]
MIN, YG [1 ]
MACDIARMID, AG [1 ]
EPSTEIN, AJ [1 ]
机构
[1] OHIO STATE UNIV,DEPT CHEM & PHYS,COLUMBUS,OH 43210
关键词
DOPING; POLYANILINE; CONFORMATION;
D O I
10.1016/0379-6779(94)02318-S
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The reduced viscosity of mixtures of polyaniline (emeraldine base, EB) and d,l-camphorsulfonic acid (HCSA) in solutions of m-cresol or chloroform (or in mixtures of these solvents) was investigated. Viscosity measurements as a function of (a) increasing m-cresol content in the mixed solvent for a fully protonated 'EBH(+)/CSA(-)' polymer, and (b) increasing protonation level of EB by increasing amounts of HCSA in m-cresol, indicate that the fully protonated polymer adopts a maximized expanded molecular conformation in a good solvent such as m-cresol. These results suggest that the greatly different conductivities obtained for 'EBH(+)/CSA(-)' films cast from m-cresol or chloroform solutions result primarily from their different molecular conformations in these solvents.
引用
收藏
页码:65 / 71
页数:7
相关论文
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