New azo-chromophore-containing multiblock poly(butadiene)s synthesized by the combination of ring-opening metathesis polymerization and click chemistry

被引：21

作者：

Ding, Liang ^{[1
]}

Zhang, Liya ^{[1
]}

Yang, Dan ^{[1
]}

Huang, Wei ^{[1
]}

Xie, Meiran ^{[1
]}

Zhang, Yiqun ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai 200062, Peoples R China

来源：

POLYMER | 2010年 / 51卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ring-opening metathesis polymerization (ROMP); Click chemistry; Multiblock copolymers; ABA TRIBLOCK COPOLYMERS; ATOM-TRANSFER; METHYL-METHACRYLATE; AMPHIPHILIC MULTIBLOCK; TELECHELIC POLYMERS; COUPLING REACTIONS; FACILE SYNTHESIS; END; ROMP; RUTHENIUM;

D O I：

10.1016/j.polymer.2010.02.001

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A combination of ring-opening metathesis polymerization (ROMP) and click chemistry approach was utilized for the first rime in preparation of multiblock copolymers The dibromo-functionalized telechelic poly(butadiene) (PBD) was synthesized firstly by ROMP of 1,5-cyclooctadiene in the presence of a symmetrical difunctional chain transfer agent and transformed into diazido-telechelic PBD, which was then reacted with a dialkynyl-containing azobenzene chromophore via click reaction, producing novel multiblock PBDs collected by azobenzene groups and newly formed triazole moieties The monomer and polymer were characterized by IR. UV-vis, LC/MS, and NMR techniques. The produced multiblock copolymers have molecular weights within 13.3 and 578 kDa, and their polydispersity indices ranging from 1 98 to 238 by gel permeation chromatography measurement The multiblock PBDs containing azo chromophores and triazole moieties with or without hydrogen-bonding interreaction with 4,4'-dihydroxybiphenyl molecule exhibited different photoisomerization efficiency from trans to cis as observation in UV-vis spectroscopy The morphologies of multiblock PBDs were also investigated by atom force microscopy. (C) 2010 Elsevier Ltd All rights reserved.

引用

页码：1285 / 1292

页数：8

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