Cross-linked supramolecular polymer networks with responsive and elastic gel properties via host-guest complexation: controlled release of squaraine dyes

被引:44
|
作者
Zeng, Fei [1 ,2 ]
Shen, Yun [1 ,2 ]
Chen, Chuan-Feng [1 ]
机构
[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Mol Recognit & Funct, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
CYLINDRICAL MACROTRICYCLIC HOST; AQUEOUS-SOLUTION; HYDROGELS; DYNAMICS; LINKING; MULTISTIMULI; ROTAXANES; CHEMISTRY; MECHANISM; GELATION;
D O I
10.1039/c3sm50529d
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Triptycene-derived macrotricyclic polyether was proved to be an efficient "molecular glue" for cross-linking the copolymer containing dibenzylammonium salts to form supramolecular polymer networks via host-guest complexation, which was evidenced by H-1 NMR spectroscopy, solution viscometry, and formation of transparent and elastic supramolecular polymer gels. Interestingly, a well-defined porous structure of the supramolecular polymer gel could be observed at the fully cross-linked density, and its mechanical properties could be modulated by the amount of the macrotricyclic host added to the system. Moreover, the supramolecular polymer gel showed acid/base- and thermo-induced reversible gel-sol transitions. Additionally, the supramolecular polymer gel could also be employed for the encapsulation and controllable release of squaraine dyes, which might find potential applications in materials science.
引用
收藏
页码:4875 / 4882
页数:8
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