Carbon dots-enhanced pH-responsive lubricating hydrogel based on reversible dynamic covalent bondings

作     者：Jianye Kang Xinyu Yang Xuhao Yang Jiahui Sun Yuhang Liu Shutao Wang Wenlong Song Jianye Kang;Xinyu Yang;Xuhao Yang;Jiahui Sun;Yuhang Liu;Shutao Wang;Wenlong Song

作者机构：State Key Laboratory of Supramolecular Structure and MaterialsCollege of ChemistryJilin UniversityChangchun 130012China CAS Key Laboratory of Bio-inspired Materials and Interfacial ScienceCAS Center for Excellence in NanoscienceTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第5期

页      面：232-237页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(No.22175075) 

主　　题：pH-responsive Carbon dots Dynamic covalent bonding Lubrication 

摘      要：Due to the various pH liquid environment in nature,the pH-responsive lubricating hydrogel is widely investigated and developed for tissue interface ***,the applied liquid environment will lead to poor mechanical property and weaken the pH-responsive *** this work,a carbon dotsenhanced pH-responsive lubricating hydrogel is developed by combining a pH-responsive section of dynamic PVA-borax network into a PAAm covalent polymer *** formed hydrogel presents a partial gel-sol transition under controlled pH *** low pH environments(6.0),the formed lubricating layer originated from dynamic disassembly of PVA-borax hydrogel,and brings the lubricating properties on the hydrogel ***,the mechanical strength and lubrication properties are well promoted by introducing the carbon dots into the hydrogel,the blue sol layer can be observed more visually under the fluorescence *** pH-response also exhibits well *** prepared hydrogel broadens the idea for designing pH-responsive soft materials for soft lubricating actuator or robot.