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  • Title: Polymerizable metal-organic frameworks for the preparation of mixed matrix membranes with enhanced interfacial compatibility.
    Author: Chen Z, Yan D, Ma L, Zhang Y, Zhang J, Li H, Khoo R, Zhang J, Svec F, Lv Y, Tan T.
    Journal: iScience; 2021 Jun 25; 24(6):102560. PubMed ID: 34142059.
    Abstract:
    The 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 CO2 from 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.
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