Triptycene‐Based Microporous Polymer with Pending Tetrazole Moieties for CO2‐Capture Application

Triptycene‐based micorporous polymer is functionalized with CO₂‐philic tetrazole moieties via ZnCl₂‐catalyzed post‐polymerization. Gas adsorption experiments indicate that it possesses high CO₂ uptake capacity, reaching 134 cm³ g^?1 (26.5 wt%) at 1.0 bar and 273 K, along with high selectivity towards CO₂ over N₂ and CH₄. The porous polymeric networks present the promising potentials as efficient adsorbents in clean energy applications.