A2BA2-type amphiphilic liquid cystalline block copolymers by ATRP: synthesis and characterization

被引：1
|
作者：
Tang, Xinde [1 ]
Han, Nianfeng [1 ]
Xu, Jing [1 ]
机构：
[1] Shandong Jiaotong Univ, Inst New Mat, Jinan 250023, Shandong, Peoples R China
来源：
ADVANCES IN LIQUID CRYSTALS | 2010年 / 428-429卷
关键词：
A(2)BA(2)-type; liquid crystal; amphiphilic block copolymer; atom transfer radical polymerization; TRANSFER RADICAL POLYMERIZATION; TRIBLOCK COPOLYMERS; AZOBENZENE; POLYMERS;
D O I：
10.4028/www.scientific.net/KEM.428-429.154
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
A(2)BA(2)-type amphiphilic liquid crystalline block copolymers containing azobenzene were synthesized by atom transfer radical polymerization (ATRP). The macroinitiator prepared by the esterification reaction between poly(ethylene glycol) (PEG) and 2,2-dichloroacetyl chloride was used to initiate the ATRP of 6-[4-(4-ethoxyphenylazo)phenoxy]hexyl methacrylate (M6C). The resulting macroinitiator and block copolymers were characterized by (1)H NMR, gel permeation chromatography (GPC). Polarizing optical microscopy (POM) and differential scanning calorimetry (DSC) preliminarily revealed the liquid crystalline property of these block copolymers. These novel amphiphilic liquid crystalline block copolymers are promising in some areas, such as optical data storage, optical switch, and molecular devices.
引用
收藏
页码：154 / 157
页数：4
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