Direct Integration of Functionalized Bridges by One-Step Superacid-Catalyzed Reaction to Fabricate Porous Polymers for CO₂ Capture and Separation.

ABSTRACT: A novel class of ultra-microporous functionalized porous organic polymers (POPs) was developed starting from glyoxylic acid as a cross-linker and triflic acid as a catalyst on polyaromatic monomers, generating in situ methine bridges with carboxylic acids. This one-pot synthetic method generated functionalized POPs with high connectivity per each aromatic group and a high density of aliphatic carboxylic acids decorating the pore walls. Remarkably, the functional groups were transformed into esters, Na- and Li-carboxylates by post-synthetic modification with high yields, generating polyionic porous polymers. These porous polymers displayed excellent CO₂ adsorption at 298 K and isosteric heat of adsorption with values as high as 50 kJ mol^-1 for the Na-containing POP end

SUBMITTER: Perego J 

PROVIDER: S-EPMC12322657 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature