SOLVENT EFFECTS ON THE POLYMERIZATION KINETICS OF SOME ALPHA-SILYLATED THIOPHENE OLIGOMERS - SPECIAL INFLUENCE OF THE ALPHA-SILYL GROUP

被引：16

作者：

HAPIOT, P

GAILLON, L

AUDEBERT, P

MOREAU, JJE

LEREPORTE, JP

MAN, MWC

机构：

[1] UNIV FRANCHE COMTE,CHIM ORGAN LAB,F-25030 BESANCON,FRANCE

[2] UNIV MONTPELLIER 2,CNRS,UA 1097,F-30095 MONTPELLIER 05,FRANCE

来源：

SYNTHETIC METALS | 1995年 / 72卷 / 02期

关键词：

SOLVENT EFFECTS; POLYMERIZATION; THIOPHENE; SILYL GROUP; OLIGOMERS;

D O I：

10.1016/0379-6779(94)02329-W

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxidation of several silylthiophene oligomers has been studied in aprotic solvents by cyclic voltammetry. Reversible voltammograms were obtained at low or very high scan rates depending on the nature of the oligomer (from 0.05 V s(-1) for 5,5'''-bis(trimethylsilyl)quaterthiophene to 25000 V s(-1) for 5-(trimethylsilyl)bithiophene in acetonitrile). The lifetimes of the electrogenerated radical cation were estimated from the appearance of the reversibility of the cyclic voltammogram. The reactivity of silyloligothiophene was found to change to a large extent with the nature of the solvent (two orders of magnitude from dichloromethane to acetonitrile). These results suggest the intervention of the desilylation reaction in the kinetically determining step of the polymerization process.

引用

页码：129 / 134

页数：6

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