Manganese-based metal-organic frameworks with nickel porphyrin for highly selective photocatalytic oxidation of benzylic C(sp³)–H bonds

Abstract

We report a nickel porphyrin–based manganese metal–organic framework photocatalyst that can activate molecular oxygen to generate singlet oxygen under mild conditions, achieving high selectivity in the photocatalytic oxidation of benzylic C(sp³)–H bonds. The spatial integration of photoactive nickel porphyrin ligands with redox-active manganese nodes enables efficient light harvesting and rapid energy transfer, thereby promoting the formation of reactive oxygen species without the need for additional oxidants or harsh conditions.