Supramolecular binding and separation of hydrocarbons within a functionalized porous metal–organic framework

Sihai Yang, Anibal J Ramirez-Cuesta, Ruth Newby, Victoria Garcia-Sakai, Pascal Manuel, Samantha K Callear, Stuart I Campbell, Chiu C Tang, Martin Schröder

    Research output: Contribution to journalArticlepeer-review


    Supramolecular interactions are fundamental to host–guest binding in many chemical and biological processes. Direct visualization of such supramolecular interactions within host–guest systems is extremely challenging, but crucial to understanding their function. We report a comprehensive study that combines neutron scattering, synchrotron X-ray and neutron diffraction, and computational modelling to define the detailed binding at a molecular level of acetylene, ethylene and ethane within the porous host NOTT-300. This study reveals simultaneous and cooperative hydrogen-bonding, π···π stacking interactions and intermolecular dipole interactions in the binding of acetylene and ethylene to give up to 12 individual weak supramolecular interactions aligned within the host to form an optimal geometry for the selective binding of hydrocarbons. We also report the cooperative binding of a mixture of acetylene and ethylene within the porous host, together with the corresponding breakthrough experiments and analysis of adsorption isotherms of gas mixtures.
    Original languageEnglish
    Pages (from-to)121-129
    Number of pages9
    JournalNature Chemistry
    Issue number2
    Publication statusPublished - 1 Dec 2014


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