Bidirectional host-guest interactions promote selective photocatalytic carbon dioxide reduction

The construction of highly efficient artificial photosynthesis systems to convert CO2 into versatile chemicals is a sustainable pathway to alleviate global warming and the ongoing energy crisis. To bring artificial photosynthetic technologies towards practical applications, a carbon cycle of CO2 reduction coupled with H2O oxidation is considered to be an ideal approach to convert solar energy into chemical energy, as performed by photosynthesis in nature.