Precise design of copolymer-conjugated nanocatalysts for active electron transfer.

A copolymer-conjugated nanocatalytic system has been designed for active electron transfer. To enhance photoinduced H 2 generation, we precisely synthesize ternary random copolymers capable of transferring electrons through phase transitions, extending and shrinking in response to viologen's redox changes within 2 nm distance from the surface of the catalytic nanoparticle.