Triptycene-Based Microporous Polymers: Synthesis and Their Gas Storage Properties

A novel kind of star triptycene-based microporous polymer (STPs) was synthesized efficiently from trihalotriptycenes by nickel(0)-catalyzed Ullmann cross-coupling reactions. STPs display a BET surface area of 1305 m² g^-1 and 1990 m² g^-1, and reversibly adsorb 1.60 and 1.93 wt % H₂ at 1.0 bar/77 K, 16.15 and 18.20 wt % CO₂ at 1.0 bar/273 K for STP-I and STP-II, respectively.