Anchoring Single‐Atomic Metal Sites in Metalloporphyrin‐Based Covalent Organic Frameworks for Enhanced Photocatalytic Hydrogen Evolution.

A photoactive covalent organic framework (COF) was built from metalloporphyrin and bipyridine monomers and single‐atomic Pt sites were subsequently installed. Integrating photosensitizing metalloporphyrin and substrate‐activating Pt(bpy) moieties in a single solid facilitates multielectron transfer and accelerates photocatalytic hydrogen evolution with a maximum production rate of 80.4 mmol h−1 gPt−1 and turnover frequency (TOF) of 15.7 h−1 observed. This work demonstrates that incorporation of single‐atomic metal sites with photoactive COFs greatly enhances photocatalytic activity and provides an effective strategy for the design and construction of novel photocatalysts. [ABSTRACT FROM AUTHOR]