Polymerizable metal-organic frameworks for the preparation of mixed matrix membranes with enhanced interfacial compatibility.

iScience

Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No 15 North Third Ring East Road, Chaoyang District, Beijing 100029, China.

Published: June 2021

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 [ZnLP] [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 CO 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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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8188547PMC
http://dx.doi.org/10.1016/j.isci.2021.102560DOI Listing

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