A Well‐Coupled Supramolecular System Accelerates Photophosphorylation

Abstract Supramolecular assembly allows multiple chemical/bio‐components integrated as one system for cascade biochemical reactions. Herein the graphitic carbon nitrides (g‐C 3 N 4 ) as photocatalyst trapped in a dipeptide hydrogel covering adenosine triphosphate (ATP) synthase accelerates the photophosphorylation through ATP synthesis. Self‐assembled N ‐fluorenylmethoxycarbonyl diphenylalanine (Fmoc‐FF) as nanofibrils to allow g‐C 3 N 4 nanosheets are embedded as a complex Fmoc‐FF/g‐C 3 N 4 hydrogel. Fmoc‐FF gel exhibits good electronic coupling with g‐C 3 N 4 , which enables a photo‐induced proton generation. The transmembrane proton gradient can be established by ATP synthase‐lipid reconstituted on the surface of the Fmoc‐FF/g‐C 3 N 4 hydrogel to enhance the ATP synthesis. It indicates that the Fmoc‐FF/g‐C 3 N 4 /ATP synthase‐lipid film can possess a longer‐term ATP production capability and allow repeated immersion for sustained ATP production. Such a hydrogel‐supported ATP synthesis platform is achieved by a procedure at a larger scale.