Vertical covalent organic framework interlayer channels enable ultraselective molecular separations.

ABSTRACT: This work addresses the long-standing challenge of insufficient permselectivity in two-dimensional (2D) covalent organic framework (COF) membranes by developing a generalizable and potentially scalable self-templating interfacial assembly method to synthesize vertically aligned 2D COF polycrystalline nanofilms. Experiments and molecular simulations reveal that molecular amphiphilicity-driven spontaneous confinement and directional alignment of framework-building units at the organic/aqueous interface instigate the vertical growth of COF monolayers. The superior sieving ability of sub-4 angstrom interlayer nanochannels enables vertically aligned COF membranes to efficiently intercept salt ions, electrically neutral small molecules, and hazardous chemicals, outperforming conventional COF mem

SUBMITTER: Fang S 

PROVIDER: S-EPMC12716399 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature