文献类型：期刊文献

英文题名：Smart Hydrogels Bearing Transient Gel-Sol-Gel Transition Behavior Driven by a Biocompatible Chemical Fuel

作者：Li, Jiaxiong[1];Yan, Changhao[2,3];Wang, Hucheng[1];Lu, Erfu[4];Wang, Yiming[1,5];Guo, Xuhong[1];Wang, Jie[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Oil & Gas Technol Res Inst Changqing Oilfield Co, CNPC, Xian 710018, Shanxi, Peoples R China;[3]Natl Engn Lab Explorat & Dev Low Permeabil Oil & G, Xian 710018, Shanxi, Peoples R China;[4]Changqing Oilfield Co, Oil Prod Plant 5, Dingbian 718600, Peoples R China;[5]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2023

卷号：5

期号：1

起止页码：1067

外文期刊名：ACS APPLIED POLYMER MATERIALS

收录：;EI(收录号：20230313387909);WOS:【SCI-EXPANDED(收录号:WOS:000910036500001)】；

基金：We thank the Natural Science Foundation of Shanghai (22ZR1417700) , Chenguang Program supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission (20CG37) , and NSFC Grants (21908061) for financial support.

语种：英文

外文关键词：hydrogels; transient sol-gel-sol transition; biocompatible chemical fuels; smart materials; dissipative self-assembly

摘要：Chemically fueled smart supramolecular gels have been of great interest because of their unique time-dependent properties. However, the vast majority of the already developed examples undergo fueled sol-gel-sol transition, where the gel materials possess nonlinear properties and usually involve the use of toxic chemical fuels, remarkably impeding their real-life applications. Here, we report on supramolecular hydrogels that show dynamic gel-sol-gel transition behavior driven by the consumption of biocompatible cyclodextrin (CD). The addition of CD converts the static hydrogels into sols, which are capable of returning to the original gel states through the spontaneous enzymatic hydrolysis of CD. The gel-sol-gel transition process is highly dynamic and tunable. Importantly, the system resides in a stable gel state after the depletion of the fuel, which would be beneficial for its functions. As an application, the hydrogel is used as a conceptual smart adhesive for fuel-controlled adhesion of model tissues. This work may contribute to the development of biocompatible non-equilibrium materials for high-tech applications, especially in the field of biomedicine.