Ultrafast static and diffusion-controlled electron transfer at Ag 29 nanocluster/molecular acceptor interfaces

Shawkat Mohammede Aly, Lina G. AbdulHalim, Tabot M.D. Besong, Giada Soldan, Osman Bakr, Omar F. Mohammed

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

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. © 2016 The Royal Society of Chemistry.
Original languageEnglish (US)
Pages (from-to)5412-5416
Number of pages5
JournalNanoscale
Volume8
Issue number10
DOIs
StatePublished - 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): URF/1/1741-01
Acknowledgements: The work reported here was supported by King Abdullah University of Science and Technology (KAUST). S. M. A. is grateful for the postdoctoral fellowship provided by Saudi Basic Industries Corporation (SABIC). OMB, TMDB, LGA, and GS acknowledge the support of SABIC Presidential Career Development Chair (No. GIF/5/1830-01-01), and KAUST Office of Sponsored Research (OSR) Award No URF/1/1741-01. L. G. A gratefully acknowledges Mr Alberto Tosato for his assistance with the thin film fabrication.

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