Thermo- and pH- dual responsive inorganic-organic hybrid hydrogels with tunable luminescence

被引：0
|
作者：
Jinlong Zhang
Haibing Wei
Junyan Tan
Weihong Qiao
Yan Guan
Jie Zhang
机构：
[1] Dalian University of Technology,State Key Laboratory of Fine Chemicals, School of Chemical Engineering
[2] Peking University,Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering
[3] Hefei University of Technology,School of Chemistry and Chemical Engineering, Provincial Key Laboratory of Advanced Functional Materials and Devices
来源：
Science China Chemistry | 2018年 / 61卷
关键词：
stimuli responsive; block copolymer; polyoxometalate; hydrogel; luminescence;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A thermo- and pH- dual responsive luminescent hydrogel was successfully constructed by coupling dysprosium-containing polyoxometalates Na9DyW10O36 (DyW10) with the ABA triblock copolymer, where the B block is PEO and the A block is the thermosensitive poly(methoxydi(ethylene glycol) methacrylate-co-N,N-dimethylaminoethyl methacrylate). The complex hybrid underwent a sol-gel phase transition above the lower critical solution temperature (LCST) of the A block. DyW10 was electrostatically encapsulated into the hydrophobic domain of the A block with enhanced photoluminescence. When temperature cooled down, the luminescence could be restored. By addition of acids to protonate the A block, and emission of DyW10 was simultaneously enhanced. Sensitivity of poly(N,N-dimethy laminoethyl methacrylate) (PDMAEMA) to pH also enabled the emission of DyW10/copolymer hydrogel to be reversibly switched by alternating acid/base treatments.
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页码：328 / 335
页数：7
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