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J Am Chem Soc. 2014 May 21;136(20):7209-12. doi: 10.1021/ja501958u. Epub 2014 May 13.

Metal-organic framework threaded with aminated polymer formed in situ for fast and reversible ion exchange.

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  • 1Department of Chemistry, The University of Hong Kong , Pokfulam Road, Pokfulam, Hong Kong.


A porous metal-organic framework composite with flexible anion-exchange polymers threaded within the host cavity demonstrates very fast and reversible ion-exchange activity. Polyvinyl benzyl trimethylammonium hydroxide (PVBTAH) caged in ZIF-8 is synthesized in steps of chloro-monomer impregnation, in situ polymerization, amination, and alkaline ion exchange. The synthesized non-cross-linked PVBTAH∼ZIF-8 material exhibits superior ion-exchange kinetics compared to conventional ion-exchange resins.

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