Photocatalytic hydrogen evolution enabled by integrating stable C^N cyclometalated [Pt(C^N)(O^O)] motifs into covalent organic frameworks

Single-atom Pt-integrated MCOFs derived from [Pt(C^N)(O^O)] motifs enable cocatalyst-free photocatalytic hydrogen evolution, with the Pt–C motifs as the active sites, offering a strategy for designing single-atom-based MCOF photocatalysts.