Titration behaviors and spectral properties of hydrophobically modified water-soluble polythiophenes

被引：13

作者：

Kim, BS ^{[1
]}

Fukuoka, H

Gong, HP

Osada, Y

机构：

[1] Sogang Univ, Dept Chem Engn, Seoul 121742, South Korea

[2] Hokkaido Univ, Grad Sch Sci, Div Biol Sci, Sapporo, Hokkaido 0600810, Japan

来源：

EUROPEAN POLYMER JOURNAL | 2001年 / 37卷 / 12期

关键词：

titration behavior; spectral property; hydrophobically modified polythiophene; steric hindrance; hydrophobicity; conformational transition;

D O I：

10.1016/S0014-3057(01)00132-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The poly(3-thiopheneacetic acid) copolymers with 3-n-methylthiophene or with a 3-n-octadecylthiophene at the 3-position of a thiophene ring were synthesized. The solution and spectral properties of these hydrophobically modified polythiophenes have been studied by potentiometric titration. UV-visible spectroscopy. The effects of the rigid conjugated main chain, the steric hindrance and the hydrophobicity of a long alkyl side chain on the backbone conformational change have been discussed. We found that the conformational transition from the aggregate state to the extended state of the hydrophobically modified polythiophenes by the change of pH is sensitively restricted by the introduction of the hydrophobic alkyl or long alkyl side chains. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2499 / 2503

页数：5

共 17 条

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