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  Ultrafast Photoinduced Electron Transfer at Electrodes: The General Case of a Heterogeneous Electron-Transfer Reaction

Gundlach, L., & Willig, F. (2012). Ultrafast Photoinduced Electron Transfer at Electrodes: The General Case of a Heterogeneous Electron-Transfer Reaction. ChemPhysChem, 13(12), 2877-2881. doi:10.1002/cphc.201200151.

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 Creators:
Gundlach, Lars1, Author
Willig, Frank2, Author           
Affiliations:
1Department of Chemistry & Biochemistry and Department of Physics & Astronomy, University of Delaware, 109 Lammot DuPont Laboratory, Newark, DE 19716 (USA), ou_persistent22              
2Theory, Fritz Haber Institute, Max Planck Society, Faradayweg 4-6, 14195 Berlin, ou_634547              

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Free keywords: charge-carrier injection;electron transfer;femtochemistry;photoelectron spectroscopy;time-resolved spectroscopy
 Abstract: The general case of a heterogeneous electron-transfer reaction is realized by ultrafast electron transfer from a light-absorbing molecule to a wide continuum of electronic acceptor states, realizing the so-called wide band limit. Experimental data obtained for perylene dye/TiO2 systems confirm the predictions of fully quantum mechanical model calculations of the dynamics. The energy distribution of the injected electron shows an energy loss due to excitations of high-energy (quantum) vibrational modes in the ionized perylene moiety. The electrontransfer mechanism is non-adiabatic and the reaction is ultrafast, for example, with a time constant of 9 fs for the COOH anchor-bridge group. The underlying strong coupling of the electronic states to high-energy vibrational modes is a characteristic feature of sensitizer molecules.

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Language(s): eng - English
 Dates: 2012-03-202012-02-212012-02-122012-04-242012-08-27
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cphc.201200151
 Degree: -

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Title: ChemPhysChem
Source Genre: Journal
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Publ. Info: Weinheim, Germany : Wiley-VCH
Pages: - Volume / Issue: 13 (12) Sequence Number: - Start / End Page: 2877 - 2881 Identifier: ISSN: 1439-4235
CoNE: https://pure.mpg.de/cone/journals/resource/954925409790