A supramolecular organic framework-type photocatalyst is constructed by host-guest complexation. Benefiting from the multivalent supramolecular assembly, it exhibits a higher effective concentration of catalytic sites and better stability to temperature, substrate, and light irradiation. As a result, the supramolecular organic framework shows improved catalytic performance in the photocatalytic oxidation of aryl boronic acids and thioethers.
A supramolecular organic framework-type photocatalyst, named TM-SOF, is constructed by the self-assembly of cucurbituril and a tetra-arm monomer containing four N, N’-dimethyl 2,5-bis(4-pyridinium)thiazolo[5,4-d]thiazole (MPT) moieties. Benefiting from the multivalent assembly, a photocatalytically active supramolecular MPT dimer can be stably formed in TM-SOF. In addition, TM-SOF exhibits better stability against temperature, substrate, and light irradiation. As a result, TM-SOF shows a significantly improved performance for the photocatalytic aerobic oxidation of aryl boronic acids and thioethers. It is anticipated that this line of research will provide a facile approach for fabricating high-performance supramolecular photocatalysis systems.Zum Volltext