Crosslinking of a Single Poly(ionic liquid) by Water into Porous Supramolecular Membranes

作     者：Shao Y. Wang Y.-L. Li X. Kheirabad A.K. Zhao Q. Yuan J. Wang H. 

作者机构：Key Laboratory of Functional Polymer Materials of the Ministry of Education Institute of Polymer Chemistry College of Chemistry Nankai University Tianjin 300071 China Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Luoyu Road No. 1037 Wuhan 430074 China 

出 版 物：《Angewandte Chemie》 

年 卷 期：2020年第132卷第39期

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

主　　题：noncovalent interactions poly(ionic liquid)s reversible porosity supramolecular membranes 

摘      要：Reversible regulation of membrane microstructures via non-covalent interactions is of considerable interest yet remains a challenge. Herein, we discover a general one-step approach to fabricate supramolecular porous polyelectrolyte membranes (SPPMs) from a single poly(ionic liquid) (PIL). The experimental results and theoretical simulation suggested that SPPMs were formed by a hydrogen-bond-induced phase separation of a PIL between its polar and apolar domains, which were linked together by water molecules. This unique feature was capable of modulating microscopic porous architectures and thus the global mechanical property of SPPMs by a rational design of the molecular structure of PILs. Such SPPMs could switch porosity upon thermal stimuli, as exemplified by dynamically adaptive transparency to thermal fluctuation. This finding provides fascinating opportunities for creating multifunctional SPPMs. © 2020 Wiley-VCH GmbH