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SMART MEMBRANES

Moving beyond passive separations

A composite membrane that contains porous organic cages is shown to be dynamic, with pore aperture diameter controlled by solvent allowing for graded molecular sieving.

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Fig. 1: Structure of the CC3 porous organic cage when exposed to water (CC3α) and when exposed to methanol (CC3γ′).

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Correspondence to Jeffrey R. McCutcheon.

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McCutcheon, J.R., Ostwal, M. & Zhang, M. Moving beyond passive separations. Nat. Mater. 21, 387–388 (2022). https://doi.org/10.1038/s41563-022-01196-3

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