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A Strong,Tough,and Self-Healing Strengthening Thioctic Acid-based Elastomer for Highly Reliable Flexible Strain Sensor

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Chinese Journal of Polymer Science 2024年第10期42卷 1610-1618,I0016页

作者： Xin-Yu Chen Yu-Bing Fu Xue-Ling Yan Lan Liu School of Materials Science and Engineering Key Lab of Guangdong Province for High Property and Functional Polymer MaterialsSouth China University of TechnologyGuangzhou510641China

Elastomers with high strength and toughness,excellent self-healing properties,and biocompatibility have broad application prospects in wearable electronics and other fields,but preparing it remains a *** this work,we propose a highly adaptable strategy by introducing the small molecule crosslinking agent of triethanolamine(TEA)to the poly(thioctic acid)(PTA)chains and preparing the PAx Ey elastomers using a simple synthesis *** strategy stabilizes the PTA chains by constructing multiple non-covalent cross-linked dynamic networks,endowing materials with excellent strength and toughness(tensile strength of 288 kPa,toughness of 278.2 kJ/m3),admirable self-healing properties(self-healing efficiency of 121.6%within 7 h at 70℃),and good *** PAx Ey elastomers can also be combined with MWNTs to become flexible strain sensors,which can be used to monitor human joint movements with high sensitivity,repeatable responses,and stability.

关键词： Thioctic acid ion clusters Multiple dynamic networks Self-healing strengthening Flexible strain sensor

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Intrinsic emission and tunable phosphorescence of perfluorosulfonate ionomers with evolved ionic clusters

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Science China Chemistry 2020年第6期63卷 833-840页

作者： Qing Zhou Jia Cui Tianjia Yang Changlu Hu Zihao Zhong Zhenhua Sun Yongyang Gong Supeng Pei Yongming Zhang School of Chemistry and Chemical Engineering Shanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research CenterCenter of Hydrogen ScienceShanghai Jiao Tong UniversityShanghai 200240China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Petrochina Petrochemical Research Institute Beijing 102299China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004China

Intrinsic emission from unorthodox luminogens without traditional conjugated building blocks is drawing increasing ***,the emission mechanism is still ***,we demonstrate the intriguing emission from perfluorosulfonate ionomers(PFSIs),which can be explained by the clustering triggered emission(CTE)*** being free of any conventional chromophores,PFSIs exhibit bright emission and multi-color phosphorescence(77 K)in concentrated solutions,powders and membranes with obvious aggregation-induced emission(AIE)*** sulfonic acids are responsible for the light emission,and their connection and evolution are deeply explored via X-ray diffraction(XRD)and small angel X-ray scattering(SAXS),in which the electron overlap determined by the clustered status results in the extended conjugation and simultaneously rigidified *** results demonstrate that it is feasible to use fluorescence analysis to explore the ionic cluster structure and evolution of PFSI,and it can be applied in the pure organic luminescent field as well.

关键词： nonconventional luminogens clustering-triggered emission tunable phosphorescence perfluorosulfonate ionomers ion clusters

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