Synthesis of thiophene-based conjugated microporous polymers for high iodine and carbon dioxide capture

Two new thiophene-based conjugated microporous polymers (BTCMP-1 and BTCMP-2) were synthesized by cross-coupling polycondensation reaction of dithiophene derivatives, 1,4-phenylenediboronic acid and 1,2,4,5-tetrafluorobenzene. BTCMP-1 and BTCMP-2 display good physicochemical stability and outstanding CO 2 adsorption capacity (648 and 289 mg/g at 50 bar and 318 K, respectively). In addition, BTCMP-1 and BTCMP-2 exhibit high iodine adsorption of 480 and 284 wt%, respectively. BTCMP-1 has relatively loose accumulation and good porosity, which leads to higher iodine adsorption value of BTCMP-1 than that of BTCMP-2. The obtained thiophene-based conjugated microporous polymers are ideal materials for iodine capture and carbon dioxide capture.