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  Probing the Birth and Ultrafast Dynamics of Hydrated Electrons at the Gold/Liquid Water Interface via an Optoelectronic Approach

Lapointe, F., Wolf, M., Campen, R. K., & Tong, Y. (2020). Probing the Birth and Ultrafast Dynamics of Hydrated Electrons at the Gold/Liquid Water Interface via an Optoelectronic Approach. Journal of the American Chemical Society, 142(43), 18619-18627. doi:10.1021/jacs.0c08289.

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 Urheber:
Lapointe, Francois1, 2, Autor           
Wolf, Martin1, Autor           
Campen, R. Kramer1, 3, Autor           
Tong, Yujin1, 3, Autor           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada, ou_persistent22              
3Faculty of Physics, University of Duisburg-Essen, Lotharstrasse 1, 47057 Duisburg, Germany, ou_persistent22              

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 Zusammenfassung: The hydrated electron has fundamental and practical significance in radiation and radical chemistry, catalysis and radiobiology. While its bulk properties have been extensively studied, its behavior at buried solid/liquid interfaces is still unclear due to the lack of effective tools to characterize this short-lived species in between two condensed matter layers. In this study, we develop a novel optoelectronic technique for the characterization of the birth and structural evolution of solvated electrons at the metal/liquid interface with a femtosecond time resolution. We thus recorded for the first time their transient spectra (in a photon energy range from 0.31 to 1.85 eV) in situ with a time resolution of 50 fs. The transient species show state-dependent optical transition behaviors from being isotropic in the hot state to perpendicular to the surface in the trapped and solvated states. The technique will enable a better understanding of hot electron-driven reactions at electrochemical interfaces.

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Sprache(n): eng - English
 Datum: 2020-01-282020-08-012020-09-202020-10-28
 Publikationsstatus: Erschienen
 Seiten: 9
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/jacs.0c08289
DOI: 10.26434/chemrxiv.11739819
 Art des Abschluß: -

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Projektname : SOLWET - Electron Transfer Across Solid/Liquid Interfaces: Elucidating Elementary Processes from Femtoseconds to Seconds
Grant ID : 772286
Förderprogramm : Horizon 2020 (H2020)
Förderorganisation : European Commission (EC)

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Titel: Journal of the American Chemical Society
  Andere : JACS
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: 9 Band / Heft: 142 (43) Artikelnummer: - Start- / Endseite: 18619 - 18627 Identifikator: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870