Abstract
A novel 3D ultramicroporous triptycene-based polyimide framework with high surface area (1050 m(2) g(-1)) and thermal stability was synthesized. It exhibits relatively high CO2 (3.4 mmol g(-1) at 273 K and 1 bar), H-2 (7 mmol g(-1) at 77 K and 1 bar), and olefin sorption capacity, good CO2/N-2 (45) and CO2/CH4 (9.6) selectivity at 273 K and 1 bar, as well as promising C2H4/CH4 and C3H6/CH4 selectivities at 298 K, making it a potential candidate for CO2 capture, H-2 storage, and hydrocarbon gas separation applications.