A₂B₂‐zinc(II)porphyrin/divinylbenzene Copolymer as Efficiently Bifunctional Catalyst for Cycloaddition of CO₂ with Epoxides

Abstract

In this work, the A2B2‐type Zn‐porphyrin (ZnPorI2) featuring vinyl and imidazolium groups was utilized to prepare porous organic polymers (POPs). The vinyl group served as the linking unit for copolymerization with rigid divinylbenzene (DVB). The imidazolium group introduced iodide ions (I−) into ZnPorI2/nDVB (n = 30, 50) as Lewis base. By fine‐tuning the ZnPorI2 to DVB ratio, it is possible to optimize the porosity, morphology, and content of Zn‐porphyrin. Owing to the synergistic effect of Zn2+ and I−, the as‐prepared ZnPorI2/30DVB exhibited excellent catalytic activities in the cycloaddition of carbon dioxide with epoxides.