Imidazolinium based porous hypercrosslinked ionic polymers for efficient CO2 capture and fixation with epoxides

2-Phenylimidazoline based porous hypercrosslinked ionic polymers afforded high yields in the cycloaddition of epoxides with ambient or diluted CO₂ (0.15 bar CO₂ and 0.85 bar N₂) under low or room temperature.