An expanded triptycene (hexaphenylbenzene based triptycene) monomer was synthesized from triiodotriptycene. Using this monomer, two kinds of organic microporous polymers HTPs (HTP-A and HTP-B) were prepared by Friedel-Crafts and Scholl reactions. Their structure and properties were characterized by FT-IR, solid C-13 NMR, powder XRD, SEM, TEM and gas absorption. Nitrogen sorption analysis displayed that the BET surface areas are 569 and 914 m(2) g(-1) for HTP-A and HTP-B, respectively. For HTP-B, they can reversibly absorb 1.09 wt % H-2 (1.0 bar and 77 K) and 10.3 wt% CO2 (1.0 bar and 273 K), respectively. (C) 2015 Elsevier Ltd. All rights reserved.