Self-Assembly and Photoresponsive Behavior of Amphiphilic Diblock Copolymers Containing Azobenzene Moieties

被引：8
|
作者：
Lin, Li [1 ]
Feng, Ze [1 ]
Yu, Qianli [1 ]
Yan, Zeng [1 ]
Yen, Chu-Chun [1 ]
Yu, Yanlei [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2009年 / 508卷
基金：
中国国家自然科学基金;
关键词：
amphiphilic block copolymer; azobenzene; microvesicle; photodeformation; self-assembly; LIQUID-CRYSTALLINE ELASTOMERS; BLOCK-COPOLYMERS; POLYMER VESICLES; LIGHT; ACTUATORS; MICELLES; SYSTEMS; FUSION; CHAIN;
D O I：
10.1080/15421400903060870
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An amphiphilic diblock copolymer, poly(ethylene oxide)-block-poly {6-[4-(4-ethoxyphenylazo) phenoxy] hexyl methacrylate}, was synthesized using atom transfer radical polymerization. In the solution of tetrahydrofuran and water, the diblock copolymer formed micrometer scale vesicles by self-assembly. Under the irradiation of UV light at 365 nm, these microvesicles generated such photoresponsive behavior as photoinduced expansion, swelling and fusion due to trans-cis photoisomerization of azobenzene units. The self-assembled vesicles even enlarged to be about five times their original size because of photoinduced fusion.
引用
收藏
页码：214 / 225
页数：12
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