Synthesis and characterization of H-type amphiphilic liquid crystalline block copolymers by ATRP

被引：2

作者：

Tang, Xin De ^{[1
,2
]}

Gao, Long Cheng ^{[2
]}

Fan, Xing He ^{[2
]}

Zhou, Qi Feng ^{[2
]}

机构：

[1] Shandong Jiaotong Univ, Inst New Mat, Jinan 250023, Peoples R China

[2] Peking Univ, Dept Polymer Sci & Engn, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2008年 / 19卷 / 02期

基金：

中国国家自然科学基金;

关键词：

H-type; amphiphilic; block copolymer; liquid crystalline property; atom transfer radical polymerization (ATRP);

D O I：

10.1016/j.cclet.2007.11.024

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

H-type amphiphilic liquid crystalline block copolymers containing azobenzene were synthesized by atom transfer radical polymerization (ATRP). Macroinitiators prepared by the esterification between poly(ethylene oxide) (PEG) and 2,2-dichloroacetyl chloride were utilized to initiate the polymerization of 6-[4-(4-ethoxyphenylazo)phenoxy]hexyl methacrylate (M6C). The resulting macroinitiators and block copolymers were characterized by H-1 NMR, gel permeation chromatography (GPC). Polarizing optical microscopy (POM) and differential scanning calorimetry (DSC) preliminarily revealed the liquid crystalline property of these block copolymers. This series of liquid crystalline block copolymers are promising in some areas, such as optical data storage, optical switch, and molecular devices. (C) 2007 Xin De Tang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

引用

页码：237 / 240

页数：4

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