Ultrafast static and diffusion-controlled electron transfer at Ag29 nanocluster/molecular acceptor interfaces

Abstract

Efficient absorption of visible light and a long-lived excited state lifetime of silver nanoclusters (Ag₂₉ NCs) are integral properties for these new clusters to serve as light-harvesting materials. Upon optical excitation, electron injection at Ag₂₉ NC/methyl viologen (MV²⁺) interfaces is very efficient and ultrafast. Interestingly, our femto- and nanosecond time-resolved results demonstrate clearly that both dynamic and static electron transfer mechanisms are involved in photoluminescence quenching of Ag₂₉ NCs.