A facile synthesis of a novel triptycene-containing A–B monomer: precursor to polymers of intrinsic microporosity

A new synthetic approach affords the first example of a triptycene-containing A–B monomer bearing both phenazine activating aromatic o-dichloride and a catecholgroup which can be used for the synthesis of a novel polymer of intrinsic microporosity (PIM) has been developed. The new polymer was characterized by GPC, IR, and ¹H NMR, elemental analysis and demonstrated good porosity, thermal stability and solubility in common organic solvents such as chloroform from which a self-supporting and transparent film could be cast.