A ketimine–ketoenamine-linked porous organic polymer: synthesis, characterization and applications

Abstract

A novel porous organic polymer (BL-TP-POP) containing β-ketoenamine and ketimine moieties was prepared through Schiff-base condensation, resulting in a framework with high stability and a large surface area. BL-TP-POP emitted fluorescence in the solid state, with a quantum efficiency of 3.56%. The material displayed a high carbon dioxide uptake capacity (up to 121 mg g⁻¹) at 273 K and 1 bar, as well as a high CO₂/N₂ selectivity (53.5). BL-TP-POP also proved effective as a heterogeneous catalyst for Knoevenagel condensation, achieving a reaction yield of 98.6%.