Functionalized Doubly Porous Networks: From Synthesis to Application in Heterogeneous Catalysis

摘要

This paper addresses the functionalization of doubly porous poly(2-hydroxyethyl methacrylate) (PHEMA)-based networks obtained from the double porogen approach, and their subsequent utilization as catalytic supports in heterogeneous catalysis. Advantage of the availability of hydroxyl groups within the PHEMA-based frameworks was taken through a chemical modification with carbonyldiimidazole. This key activation led to three main functionatization reactions of the materials via nucleophilic substitution or thiol-yne "click" addition of amino molecules. Further, in-situ generation of gold nanoparticles (GNPs) allowed for the preparation of innovative functionalized biporous GNP@PHEMA materials. The as-obtained hybrid frameworks could efficiently be used as catalytic supports in the reduction of 4-nitrophenol.