Synthesis, characterization and properties of azobenzene side-chain polythiophene

被引：17

作者：

Gan, LH

Xia, XL

Chan, YC

Hu, X

Zhao, XY

机构：

[1] Nanyang Technol Univ, Natl Inst Educ, Singapore 637616, Singapore

[2] Nanyang Technol Univ, Sch Mat Engn, Adv Mat Res Ctr, Singapore 2263, Singapore

来源：

POLYMERS FOR ADVANCED TECHNOLOGIES | 2003年 / 14卷 / 3-5期

关键词：

polythiophene; azobenzene; trans-cis isomenzation; copolymerization; spectrophotometry;

D O I：

10.1002/pat.303

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thiophene monomers with an azobenzene moiety of different spacer length at the 3-position of the thiophene ring were synthesized. The monomers were polymerized and copolymerized with 3-hexyl thiophene to investigate the influence of an azobenzene side-chain on the properties of polythiophene, which has been widely used as a conducting polymer and has also been found many other applications. The polymers were characterized with UV-vis, FT-IR spectrophotometry gel permeation chromatographic (GPC) analysis, DSC, TGA, elemental analysis and X-ray diffractometry. The polymers showed novel thermochromic and photoresponsive properties in polymer solutions and solid films. It was found that an azobenzene side-chain could bring about substantial thermochromic and photochromic changes to the polythiophene backbone as compared with non-azobenzene side-chain polythiophenes. These property changes could be triggered or controlled by light or heat on the basis of azobenzene trans-cis or cis-trans isomerization. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：260 / 265

页数：6

共 20 条

[1]

BROWN GH, 1971, PHOTOCHEMISM TECHNIQ, V3

[2]

CHEN SA, 1993, MAKROMOL CHEM-RAPID, V14, P69

[3]

CHEN SA, 1993, SYNTHETIC MET, V55, P4950

[4] THE 1ST REGIOREGULAR HEAD-TO-TAIL POLY(3-HEXYLTHIOPHENE-2,5-DIYL) AND A REGIORANDOM ISOPOLYMER - NI VS PD CATALYSIS OF 2(5)-BROMO-5(2)-(BROMOZINCIO)-3-HEXYLTHIOPHENE POLYMERIZATION [J].