Ionic hypercrosslinked polymers featuring hydrogen bonds and Lewis base sites for enhancing CO 2 -epoxide coupling reaction

Abstract

We introduce hydrogen bonding sites into ionic hypercrosslinked polymers and examine their role in promoting the CO2-epoxide coupling reaction. The amino-functionalized iHCPs-NH2 exhibits the highest catalytic activity, achieving >99% cyclic carbonate yield without any solvent and co-catalyst. This performance stems from good CO2 adsorption capacity, basic -NH2 groups that activate CO2, and hydrogen bonding interaction between -NH2 and epoxides.