Multivariate synergy for heightening ionic HOF robustness and proton conductivity

作     者：Xiang-Tian Bai Li-Hui Cao Xu-Yong Chen Jia-Yu Wang Zi-Ye Zhou 

作者机构：Shaanxi Key Laboratory of Chemical Additives for IndustryCollege of Chemistry and Chemical EngineeringShaanxi University of Science and Technology 

出 版 物：《Science China Chemistry》 (中国科学:化学(英文版))

年 卷 期：2025年第68卷第5期

页      面：1879-1887页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (22075169) Shaanxi Fundamental Science Research Project for Chemistry and Biology (22JHQ026) Shaanxi University of Science and Technology 

主　　题：multivariate synergy ionic hydrogen-bonded organic framework robustness proton conduction 

摘      要：Multicomponent crystalline materials construct more complex and diversified structures with different combinations and modes,which expands the material structure space and application fields. In this work, we have successfully synthesized two twocomponent ionic hydrogen-bonded organic frameworks（iHOF-32 and iHOF-33） and a three-component iHOF（iHOF-34）. Guanidine hydrochloride which is rich in N and H and has a short chain length strengthens the hydrogen bonding network of iHOF, thereby aiding in the efficient migration of protons. The rigid architecture of 1,1 -diamino-4,4 -bipyridine diiodide furnishes additional scaffolding for the iHOFs and enhances its robustness under harsh conditions. iHOF-34 accomplishes the combination of the ultra-high proton conductivity of iHOF-32 and the robustness of iHOF-33 by the synergistic interaction among the three components of ligands. In addition, iHOF-34 was fabricated as a composite membrane with a peak proton conductivity of 1.55 × 10-1S cm-1, which is 3.8 times higher than that of recast Nafion, and has extensive potential in fuel *** self-assembly strategy of multicomponent HOFs opens up new avenues for constructing diverse structures while promising new opportunities for applications in the fields of proton conduction and energy storage.