Porous Organic Polymers via Diels–Alder Reaction for the Removal of Cr(VI) from Aqueous Solutions

The Diels–Alder reaction is striking as a prominent synthetic tool for the rapid construction of complex molecular frameworks, but the synthesis of porous organic polymers (POPs) via the Diels–Alder reaction is rare. Herein, we report the solvothermal synthesis of a new type of POPs (DA-POPs) via the furan/alkynyl Diels–Alder reaction. These polymers show favorable porous properties and high specific surface areas (up to 1041 m2·g–1). Meanwhile, the high porosity in conjuction of ether bridges in the DA-POPs enable a fine adsorption performance for the removal of Cr(VI) from aqueous solutions.