Direct Synthesis of Porous Organic Polymers with Protected Ethyne Monomer

Abstract

Conventional approaches for the synthesis of porous organic polymers (POPs) typically rely on alkynyl-substituted monomers, which are often costly. In contrast, the direct use of ethyne as a building block offers a promising strategy to significantly reduce the material cost of these polymers. Herein, we report a novel synthetic methodology that directly employs protected ethyne to construct a variety of POPs. The feasibility of the reaction was first validated through a smallmolecule model reaction. Subsequently, polymerization of acetylene-based monomers with five different electrophilic reagents afforded five distinct POPs. These polymers exhibit high specific surface areas (>600 m 2 g -1 ), diverse microscopic morphologies, and tunable photoelectric properties. Moreover, they demonstrate excellent performance in the photocatalytic oxidation of 5-hydroxymethylfurfural (HMF).