Postsynthetic Selective Ligand Cleavage by Solid-Gas Phase Ozonolysis Fuses Micropores into Mesopores in Metal-Organic Frameworks

Vincent Guillerm, Heng Xu, Jorge Albalad, Inhar Imaz, Daniel Maspoch

    Research output: Contribution to journalArticleResearch

    28 Citations (Scopus)

    Abstract

    © 2018 American Chemical Society. Herein we report a novel, ozone-based method for postsynthetic generation of mesoporosity in metal-organic frameworks (MOFs). By carefully selecting mixed-ligand Zr-fcu-MOFs based on organic ligand pairs in which one ligand has ozone-cleavable olefin bonds and the other ligand is ozone-resistant, we were able to selectively break the cleavable ligand via ozonolysis to trigger fusion of micropores into mesopores within the MOF framework. This solid-gas phase method is performed at room-temperature, and, depending on the cleavable ligand used, the resultant ligand-fragments can be removed from the ozonated MOF by either washing or sublimation. Compared to the corresponding highly microporous starting MOFs, the highly mesoporous product MOFs exhibit radically distinct gas sorption properties.
    Original languageEnglish
    Pages (from-to)15022-15030
    JournalJournal of the American Chemical Society
    Volume140
    DOIs
    Publication statusPublished - 7 Nov 2018

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