Structure and Segmental Motions in a Substituted Polythiophene: A Solid-State NMR Study

被引：13

作者：

Le Bouch, Nolwenn ^{[1
]}

Auger, Michele ^{[1
]}

Leclerc, Mario ^{[1
]}

机构：

[1] Univ Laval, Dept Chim, Quebec City, PQ G1K 7P4, Canada

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2008年 / 209卷 / 24期

基金：

加拿大自然科学与工程研究理事会;

关键词：

conjugated polymers; polythiophenes; solid-state NMR; thermochromism;

D O I：

10.1002/macp.200800365

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermochromic poly[3-(2-methyl-1-butoxy)-4-methylthiophene] has been investigated in the solid state. Some important changes have been observed by UV-Vis absorption and XRD measurements. Solid-state NMR spectroscopy, which has the ability to provide information about the structure and dynamics of polymers over a wide range of length scales and time scales, has been utilized to better understand the motion of polythiophene chains during this thermochromic transition. Different solid-state NMR analyses led to the determination of the relaxation rates for the main chain and the side chain as well as to the characterization of a twisting of the conjugated backbone chain during the thermochromic transition.

引用

页码：2455 / 2462

页数：8

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