Bromine pre-functionalized porous polyphenylenes: New platforms for one-step grafting and applications in reversible CO2 capture

Abstract The condensation of aromatic and brominated monomers using the solvent knitting strategy has produced new porous polyphenylenes with high specific surfaces areas (935–1950 m 2  g −1 ) and high bromine content (10–22 %). These bromine-polymers have been functionalized in a single step by reaction with TREN or TEPA alkylamines, studying their effect on the CO 2 adsorption properties. Pure CO 2 analyses show a maximum uptake of 1.03 and 1.54 mmol CO 2 /g for 2 Ph-TEPA and 5 Ph-TEPA respectively at 30 °C and atmospheric pressure. Resulting materials allow low heating cost during regeneration, and high stability after CO 2 adsorption-desorption cycles, making these materials more easily recyclable than other TEPA-impregnated adsorbents.