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

Self-Assembly and Photoresponsive Behavior of Amphiphilic Diblock Copolymers Containing Azobenzene Moieties
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含偶氮苯部分的两亲性二嵌段共聚物的自组装和光响应行为

DOI:
10.1080/15421400903060870
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发表时间:
2009-09
期刊:
Molecular Crystals and Liquid Crystals (IF = 0.543)
影响因子:
--
通讯作者:
Yu, Yanlei
Yu, Yanlei
中科院分区:
其他
文献类型:
--
作者:
Lin, Li;Yen, Chu-Chun;Feng, Ze;Yu, Qianli;Yan, Zeng;Yu, Yanlei

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相似文献

采用原子转移自由基聚合法合成了两亲性双嵌段共聚物聚(环氧乙烷)-嵌段聚{6-[4-(4-乙氧基苯偶氮)苯氧基]甲基丙烯酸己酯}。在四氢呋喃和水的溶液中,二嵌段共聚物通过自组装形成微米级的囊泡。在365 nm紫外光照射下,这些微泡由于偶氮苯单元的反式光异构化而产生光诱导膨胀、膨胀和融合等光响应行为。由于光诱导融合,自组装的囊泡甚至扩大到原来大小的五倍左右。
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.
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