面向高性能柔性电子的强韧、可修复和优异抗穿刺的氟化弹性体  

A fluorine-based strong and healable elastomer with unprecedented puncture resistance for high performance flexible electronics

作　　者：贾宇杰 管清宝 储成臻 张璐之 Rasoul Esmaeely Neisiany 顾士甲 孙俊芬 游正伟 Yujie Jia;Qingbao Guan;Chengzhen Chu;Luzhi Zhang;Rasoul Esmaeely Neisiany;Shijia Gu;Junfen Sun;Zhengwei You(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Institute of Functional Materials,College of Materials Science and Engineering,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,China;Biotechnology Centre,Silesian University of Technology,Gliwice 44-100,Poland;Department of Polymer Engineering,Hakim Sabzevari University,Sabzevar 9617976487,Iran)

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Institute of Functional Materials,College of Materials Science and Engineering,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,China [2]Biotechnology Centre,Silesian University of Technology,Gliwice 44-100,Poland [3]Department of Polymer Engineering,Hakim Sabzevari University,Sabzevar 9617976487,Iran

出　　处：《Science Bulletin》2024年第12期1875-1886,共12页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(52173117,52073049,and 21991123);the National Key Research and Development Program of China(2021YFC2101800 and 2021YFC2400802);Ningbo 2025 Science and Technology Major Project(2019B10068);the Natural Science Foundation of Shanghai(22ZR1400700);Shanghai Rising-Star Program(21QA1400200);the Science and Technology Commission of Shanghai Municipality(20DZ2254900 and 20DZ2270800)。

摘　　要：There is usually a trade-off between high mechanical strength and dynamic self-healing because the mechanisms of these properties are mutually exclusive.Herein,we design and fabricate a fluorinated phenolic polyurethane(FPPU)elastomer based on octafluoro-4,4'-biphenol to overcome this challenge.This fluorine-based motif not only tunes interchain interactions throughπ-πstacking between aromatic rings and free-volume among polymer chains but also improves the reversibility of phenol-carbamate bonds via electron-withdrawing effect of fluorine atoms.The developed FPPU elastomer shows the highest recorded puncture energy(648.0 m J),high tensile strength(27.0 MPa),as well as excellent selfhealing efficiency(92.3%),along with low surface energy(50.9 MJ m^(-2)),notch-insensitivity,and reprocessability compared with non-fluorinated counterpart biphenolic polyurethane(BPPU)elastomer.Taking advantage of the above-mentioned merits of FPPU elastomer,we prepare an anti-fouling triboelectric nanogenerator(TENG)with a self-healable,and reprocessable elastic substrate.Benefiting from stronger electron affinity of fluorine atoms than hydrogen atoms,this electronic device exhibits ultrahigh peak open-circuit voltage of 302.3 V compared to the TENG fabricated from BPPU elastomer.Furthermore,a healable and stretchable conductive composite is prepared.This research provides a distinct and general pathway toward constructing high-performance elastomers and will enable a series of new applications.

关 键 词：Fluorinated elastomer Polyurethane Phenol-carbamate bonds SELF-HEALING Reprocessable 

分 类 号：TQ334[化学工程—橡胶工业]