文献类型：期刊文献

英文题名：Toughening a Self-Healable Supramolecular Polymer by Ionic Cluster-Enhanced Iron-Carboxylate Complexes

作者：Deng, Yuanxin[1,2];Zhang, Qi[1,2];Feringa, Ben L.[1,2,3,4];Tian, He[1,2];Qu, Da-Hui[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Univ Groningen, Stratingh Inst Chem, Ctr Syst Chem, Nijenborgh 4, NL-9747 AG Groningen, Netherlands;[4]Univ Groningen, Zernike Inst Adv Mat, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

年份：2020

卷号：59

期号：13

起止页码：5278

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20200908243647);WOS:【SCI-EXPANDED(收录号:WOS:000515397000001)】；

基金：This work was supported by National Natural Science Foundation of China (grants 21790361, 21871084, 21672060), Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), Program of Shanghai Academic/Technology Research Leader (grant 19XD1421100), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant B16017), and the Shanghai Science and Technology Committee (grant 17520750100). B.L.F. acknowledges financial support of the Netherlands Ministry of Education, Culture and Science (Gravitation program 024.601035). We thanks Dr. Na Li (BL19U2 beamline of Shanghai Synchrotron Radiation Facility) for her kind help in synchrotron radiation SAXS test, Qi Wei and Prof. Zhijun Ning (ShanghaiTech University) for their kind help in GIWAXS experiments, and the Research Center of Analysis and Test of East China University of Science and Technology for the help on the material characterization.

语种：英文

外文关键词：dynamic covalent chemistry; elastomers; ionic clusters; self-healing materials; supramolecular polymers

摘要：Supramolecular polymers that can heal themselves automatically usually exhibit weakness in mechanical toughness and stretchability. Here we exploit a toughening strategy for a dynamic dry supramolecular network by introducing ionic cluster-enhanced iron-carboxylate complexes. The resulting dry supramolecular network simultaneous exhibits tough mechanical strength, high stretchability, self-healing ability, and processability at room temperature. The excellent performance of these distinct supramolecular polymers is attributed to the hierarchical existence of four types of dynamic combinations in the high-density dry network, including dynamic covalent disulfide bonds, noncovalent H-bonds, iron-carboxylate complexes and ionic clustering interactions. The extremely facile preparation method of this self-healing polymer offers prospects for high-performance low-cost material among others for coatings and wearable devices.