Unlocking large-area free-standing MOF-glasses for molecular sieving gas separation membranes.

The measured single gas permeability shows a decreasing trend with an increase of the kinetic diameters, d kin , of the tested gas species: He (d kin = 2.6 Å), H 2 (d kin = 2.89 Å), CO 2 (d kin = 3.3 Å), N 2 (d kin = 3.64 Å), and CH 4 (d kin = 3.8 Å) (Fig. 4b ).

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