biostudies-literatureUnknown64(32)Perego JA 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 endAngewandte Chemie (International ed. in English)e202507863https://www.ebi.ac.uk/biostudies/studies/S-EPMC12322657biostudies-literatureDirect Integration of Functionalized Bridges by One-Step Superacid-Catalyzed Reaction to Fabricate Porous Polymers for CO<sub>2</sub> Capture and Separation.PMC12322657Perego JSozzani PPiva SBezuidenhout CXComotti ABracco SfalseDirect Integration of Functionalized Bridges by One-Step Superacid-Catalyzed Reaction to Fabricate Porous Polymers for CO<sub>2</sub> Capture and Separation.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 end2025-01-01T00:00:00Z2025 Aug2026-03-27T17:13:57.077Z2025-08-30T03:09:34.782ZS-EPMC123226574047651610.1002/anie.202507863