Incorporation of carbazole and boron-containing dye into conjugated microporous polymers with significant aerobic oxidative photocatalysis

Carbazole-based conjugated microporous polymers(CMPs)as a new type of advanced porous material have created tremendous research curiosities in the area of photocatalysis.Besides,introducing boron-containing dyes into the CMPs framework was rare but will be rather promising due to their unique properties,including strong electron-accepting capability,efficient catalytic behaviour,significant absorption coefficient and high quantum.Herein,we rationally designed and prepared two new CMPs,i.e.Cz-BF_(2)-CMP and Cz-BPh2-CMP with the combination of carbazole and boron-containing dye as electron donor and acceptor motifs,respectively.Due to the efficient D-A effect between carbazole and boron-dye which not only accelerated the interfacial charge transfer efficiency but also improved the separation capability of photogenerated electron-hole pairs,both CMPs exhibited excellent photocatalytic performances in organic transformations such as green synthesis of benzimidazole in aqueous solution and aerobic oxidation of thioether in EtOH.