Prof. Bae’s group has developed a series of porous organic polymers possessing various functional groups, which were incorporated into an in-house polyimide to fabricate mixed-matrix membranes for CO2/N2 separation. Their systematic study revealed that both the structural properties and chemical functionality should be optimized together to obtained an ideal filler material for CO2-selective mixed-matrix membranes. The optimized membrane showed ultrahigh CO2 permeability of 2988 Barrers (158% higher than that of a pure polymer membrane) with a decent enhancement of the CO2/N2 selectivity....read more