A New Multidentate Hexacarboxylic Acid for the Construction of Porous Metal−Organic Frameworks of Diverse Structures and Porosities

Three porous metal−organic frameworks have been constructed from the new developed C3-symmetric hexacarboxylic acid 3,3′,3′′,5,5′,5′′-benzene-1,3,5-triyl-hexabenzoic acid (H6BHB) of different NaCl- and Al2O3-type topologies. The activated metal−organic frameworks (MOFs) exhibit permanent porosities as revealed in their gas and vapor adsorption isotherms, highlighting the promise of this new ligand for the construction of porous MOFs for gas storage and separation.

本研究以新开发的C3对称六羧酸配体3,3′,3′′,5,5′,5′′-苯-1,3,5-三基-六苯甲酸（H6BHB）为原料，合成了三种分别具有氯化钠（NaCl）型与三氧化二铝（Al2O3）型拓扑结构的多孔金属有机框架（Metal-Organic Frameworks, MOFs）。经活化处理后的该系列MOFs展现出永久孔隙特性，其气体与蒸汽吸附等温线证实了这一结果，凸显了该新型配体在构建用于气体存储与分离的多孔MOFs方面的应用前景。