A Supramolecular Janus Hyperbranched Polymer and Its Photoresponsive Self-Assembly of Vesicles with Narrow Size Distribution

被引:332
|
作者
Liu, Yong [1 ]
Yu, Chunyang [1 ]
Jin, Haibao [1 ]
Jiang, Binbin [1 ]
Zhu, Xinyuan [1 ]
Zhou, Yongfeng [1 ]
Lu, Zhongyuan [2 ]
Yan, Deyue [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[2] Jilin Univ, Inst Theoret Chem, State Key Lab Theoret & Computat Chem, Changchun 130023, Peoples R China
基金
中国国家自然科学基金;
关键词
SUPERMOLECULAR LIQUID-CRYSTALS; BLOCK-COPOLYMERS; DENDRIMERS; ARCHITECTURES; FUNCTIONALITY; NANOMEDICINE; STOMATOCYTES; AMPHIPHILES; PARTICLES; MICELLES;
D O I
10.1021/ja3122608
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Herein, we report a novel Janus particle and supramolecular block copolymer consisting of two chemically distinct hyperbranched polymers, which is coined as Janus hyperbranched polymer. It is constructed by the noncovalent coupling between a hydrophobic hyperbranched poly(3-ethyl-3-oxetanemethanol) with an apex of an azobenzene (AZO) group and a hydrophilic hyperbranched polyglycerol with an apex of a beta-cyclodextrin (CD) group through the specific AZO/CD host-guest interactions. Such an amphiphilic supramolecular polymer resembles a tree together with its root very well in the architecture and can further self-assemble into unilamellar bilayer vesicles with narrow size distribution, which disassembles reversibly under the irradiation of UV light due to the trans-to-cis isomerization of the AZO groups. In addition, the obtained vesicles could further aggregate into colloidal crystal-like close-packed arrays under freeze-drying conditions. The dynamics and mechanism for the self-assembly of vesicles as well as the bilayer structure have been disclosed by a dissipative particle dynamics simulation.
引用
收藏
页码:4765 / 4770
页数:6
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