Microporous and stable covalent organic framework for effective gas uptake

Abstract Covalent organic frameworks (COFs) are a new class of crystalline porous materials, maintaining porosity, stability, uniform pore channel, and well-designed skeletons. These features trait to be well suited as a platform for effective adsorption and separation of sorbents. Here, we reported microporous and stable COF with high-density N and O atoms that are implanted via the linker and vertex design. The new COF possessed high crystallinity, permanent micropores, excellent thermal and chemical stability, and high-density N and O atoms on the walls. Interestingly, the new COF is able to capture CO2 of 14.2 wt%, and iodine vapor of 456 wt%. These results evolve structural designs of COFs as effective gas uptake scaffolds.