首页|Cooperative Chemical Coupling and Physical Lubrication Effects Construct Highly Dynamic Ionic Covalent Adaptable Network for High-Performance Wearable Electronics
Cooperative Chemical Coupling and Physical Lubrication Effects Construct Highly Dynamic Ionic Covalent Adaptable Network for High-Performance Wearable Electronics
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Covalent adaptable networks(CANs),which com-bine the benefits of traditional thermosets and ther-moplastics,have attracted considerable attention.The dynamics of reversible covalent bonds and mobility of polymer chains in CANs determine the topological rearrangement of the polymeric net-work,which is critical to their superior features,such as self-healing and reprocessing.Herein,we introduce an ionic liquid to dimethylglyoxime-urethane(DOU)-based CANs to regulate both reversible bond dynamics and polymer chain mo-bility by cooperative chemical coupling and physi-cal lubrication.Small-molecule model experiments demonstrated that ionic liquids can catalyze dy-namic DOU bond exchange.Ionic liquid also breaks the hydrogen bonds between polymeric chains,thereby increasing their mobility.As a combined result,the activation energy of the dissociation of the dynamic network decreased from 110 to 85 kJ mol-1.Furthermore,as a functional moiety,the ionic liquid imparts new properties to CANs and will greatly expand their applications.For example,the consequent conductivity of resultant ionic CAN(iCAN)has demonstrated a great power to build high-performance multifunctional wearable elec-tronics responsive to multiple stimulations includ-ing temperature,strain,and humidity.This study provides a new design principle that simultaneously uses the chemical and physical effects of two struc-tural components to regulate material properties enabling novel applications.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Institute of Functional Materials,Research Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society),Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine,Donghua University,Shanghai 201620
Key Laboratory of Clinical and Medical Engineering,School of Biomedical Engineering and Informatics,Nanjing Medical University,Nanjing 211166
Department of Materials and Polymer Engineering,Faculty of Engineering,Hakim Sabzevari University,Sabzevar 9617976487
国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金上海市自然科学基金上海市自然科学基金Shanghai Rising-Star ProgramBelt & Road Young Scientist Exchanges Project of Science and Technology Commission Foundation of ShanghaiNingbo 2025 Science and Technology Major Project上海市科委项目上海市科委项目中央高校基本科研业务费专项DHU Distinguished Young Professor ProgramNatural Science Funding of Jiangsu Province Grant
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