BODIPY-containing porous organic polymers for gas adsorption

A series of BODIPY-containing microporous organic polymers was synthesized via a Sonogashira-Hagihara cross-coupling reaction of a BODIPY derivative with triple polymerisable groups and a range of aryl-alkyne monomers. All of the polymers show high isosteric heats of CO2 adsorption ( 23.3-27.3 kJ mol(-1)) because the incorporation of heteroatoms (N, B, F) from the BODIPY unit into the polymer skeleton enhanced the binding affinity between the pore wall and CO2 molecules. The aryl-alkyne monomer has a large influence on the surface area and CO2 adsorption performance of the resulting polymers. The polymer BDPCMP-3 shows a high Brunauer-Emmett-Teller specific surface area of up to 725 m(2) g(-1), while BDPCMP-2 with a low surface area of 582 m(2) g(-1) shows a high CO2 uptake ability of 2.25 mmol g(-1) at 1.13 bar/273 K with a CO2/N-2 adsorption selectivity of 32.3.