Photo-tailored heterocrystalline covalent organic framework membranes for organics separation

Abstract

Covalent organic frameworks (COF) hold great promise in filtration and separation but combining facile processing, high crystallinity and high separation performance remains challenging. Here, the authors demonstrate that heterocrystalline COF membranes in which high-crystalline regions are tightly linked by low-crystalline regions can improve molecular sieving properties at high solvent flux.