Enabling high C 2 H 2 storage and efficient C 2 H 2 /CO 2 separation in a cage-like MOF with multiple supramolecular binding sites

A cage-like MOF (Cu-TPHC) with multiple supramolecular binding sites is reported to overcome the trade-off effect between adsorption capacity and separation performance for C 2 H 2 /CO 2 , affording 99.4% purity C 2 H 2 under various conditions.