DHPA-Containing Cobalt-Based Redox Metal-Organic Cyclohelicates as Enzymatic Molecular Flasks for Light-Driven H2 Production.

摘要: The supramolecular assembly of predesigned organic and inorganic building blocks is an excellent tool for constructing well-defined nanosized molecular cavities that catalyse specific chemical transformations. By incorporating a reduced nicotinamide adenine dinucleotide (NADH) mimic within the ligand backbone, redox-active cobalt-based macrocycle was developed as redox vehicle construction artificial photosynthesis (AP) system. cyclohelicate can encapsulate fluorescein its cavity light-driven H2 evolution, with turnover number (TON) frequency (TOF) reaching 400 100 moles per mole catalyst hour, respectively. Control experiments demonstrated reactions were potentially occurred cyclohelicates which inhibited in presence adenosine triphosphate (ATP), NADH dihydropyridine amido moieties ligands played important role photocatalytic proton reduction process.