Synergistic control of dual cross-linking strategy toward tailor-made hydrogels  

作　　者：Xueyu Dou Qingchen Cao Feifei Sun Yaqiang Wang Hufei Wang Hong Shen Fei Yang Xing Wang Decheng Wu 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Chemistry》2020年第12期1793-1798,共6页中国科学（化学英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(21674120,51973226,21725403).

摘　　要：Simple, efficient and accurate controllable systems for materials are becoming more essential, in response to the explosively growing demands in the fields of chemistry and material science. Herein, tailored hydrogels are explored depending on synergistic regulation of p H-responsive chemical networks with an "on/off" function and physical networks with dynamic selfoptimized arrangement. Thiol-disulfide exchange reaction endows hydrogels with controlled architectures while hydrogen bondstrengthened 2-ureido-4[1H]-pyrimidinone(UPy) moieties contributes a significant increase in mechanical strengths. The integration of that dual cross-linking(DC) network ensures the hydrogels with customized structure and enhanced mechanical property. Such controllably strategy is universally applicable and will open a new avenue to flexibly fabricate desired hybrid hydrogels with distinctive features and functions for their potential applications.

关 键 词：controlled hydrogels dual cross-linked network thiol-disulfide exchange hydrogen bonding synergistic regulation 

分 类 号：TQ427.26[化学工程]