文献类型：期刊文献

英文题名：Mineralized Supramolecular Hydrogels Bearing Tunable Thermo-Responsiveness

作者：Wang, Yu[1];Wang, Yiming[1];Wang, Jie[1];Zhao, Fang[1];Xu, Zhi[1];Yuan, Zhenyu[1];Niu, Xiaofeng[1];Li, Li[1];Bai, Shengyu[1];Shi, Yulin[2];Guo, Xuhong[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Key Lab Mat Chem Engn Xinjiang Uygur Autonomous R, North Fourth Rd 221, Shihezi 832000, Peoples R China

年份：2019

卷号：40

期号：23

外文期刊名：MACROMOLECULAR RAPID COMMUNICATIONS

收录：;EI(收录号：20194607696848);WOS:【SCI-EXPANDED(收录号:WOS:000494538300001)】；

基金：The authors acknowledge the financial support from the NSFC Grants (51761135128 and 51773061), Key Scientific and Technological Project of Xinjiang Bingtuan (2018AB025), the Fundamental Research Funds for the Central Universities (22221818010 and 222201917013), and the Start-Up Grant of East China University of Science and Technology (50621011901008)`

语种：英文

外文关键词：amorphous calcium carbonate; hydrogels; mineralization; supramolecular chemistry; thermo-responsiveness

摘要：Although a variety of biomimetic mineralized materials have been created in the lab, the vast majority of these manmade examples lack response to external stimuli. Here, mineralized supramolecular hydrogels with on-demand thermo-responsiveness that are formed by a simple, physical crosslinking between amorphous CaCO3 (ACC) nanoparticles and poly(acrylic acid) (PAA) are reported. Upon the addition of Na2CO3 solution into a mixture composed of PAA and CaCl2, amorphous ACC nanoparticles are formed in situ and simultaneously crosslinked by PAA chains, giving rise to the mineralized hydrogels. Interestingly, upon tuning the content of the formed ACC, hydrogels with different types of thermo-responsiveness can be easily obtained, and the transparencies of the resulting hydrogels are dramatically changed during the temperature-driven phase transitions. As an application, these thermo-responsive mineralized hydrogels are used to control the exposure of UV light, which is successfully applied to switch fluorescent signals in response to temperature.