摘要：SummaryThe preparation of flawless and defect-free mixed matrix membranes (MMMs) comprising metal-organic framework (MOF) and polymer is often difficult owing to the poor MOF/polymer interface compatibility. Herein, we present the synthesis of an important family of pillared-layered MOFs with polymerizable moieties based on the parent structure [Zn2L2P]n[L = vinyl containing benzenedicarboxylic acid linkers; P = 4,4′-bipyridine (bipy)]. The crystalline structures of polymerizable MOFs were analyzed using single-crystal X-ray crystallography. The presence of reactive double bonds in MOFs was verified by the successful thiol-ene click reaction with sulfhydryl compounds. The subsequent copolymerization of polymerizable MOFs with organic monomers produced mixed matrix membranes with enhanced MOF/polymer interfacial adhesion that enabled good separation efficiency of CO2from flue gas. This strategy provides a stimulating platform to the preparation of highly efficient MMMs that are capable of mitigating energy consumption and environment issues.Graphical abstractDisplay OmittedHighlights•A new class of vinyl-containing MOFs was constructed for the separation of CO2and N2.•The structure of BUCT MOFs were analyzed by single-crystal X-ray crystallography.•The C=C double bonds of BUCT MOFs can serve as polymerizable groups with high activity.•BUCT-2 based MMM exhibited a superior CO2/N2selectivity of 41.6.
