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  Ultrafast Energy Transfer in Excitonically Coupled Molecules Induced by a Nonlocal Peierls Phonon

Duan, H.-G., Nalbach, P., Miller, R. J. D., & Thorwart, M. (2019). Ultrafast Energy Transfer in Excitonically Coupled Molecules Induced by a Nonlocal Peierls Phonon. The Journal of Physical Chemistry Letters, 10(6), 1206-1211. doi:10.1021/acs.jpclett.9b00242.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0003-20F9-0 Version Permalink: https://hdl.handle.net/21.11116/0000-0003-3CDF-0
Genre: Journal Article

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https://dx.doi.org/10.1021/acs.jpclett.9b00242 (Publisher version)
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 Creators:
Duan, H.-G.1, 2, Author           
Nalbach, P.3, Author
Miller, R. J. D.2, 4, Author           
Thorwart, M.1, Author
Affiliations:
1Institut für Theoretische Physik, Universität Hamburg, ou_persistent22              
2Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
3Westfälische Hochschule, ou_persistent22              
4The Departments of Chemistry and Physics, University of Toronto, ou_persistent22              

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 Abstract: Molecular vibration can influence exciton transfer via either a local (intramolecular) Holstein or a nonlocal (intermolecular) Peierls mode. We show that a strong vibronic coupling to a nonlocal mode dramatically speeds up the transfer by opening an additional transfer channel. This Peierls channel is rooted in the formation of a conical intersection of the excitonic potential energy surfaces. For increasing Peierls coupling, the electronically coherent transfer for weak coupling turns into an incoherent transfer of a localized exciton through the intersection for strong coupling. The interpretation in terms of a conical intersection intuitively explains recent experiments of ultrafast energy transfer in photosynthetic and photovoltaic molecular systems.

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Language(s): eng - English
 Dates: 2019-01-262019-02-252019-02-252019-03-21
 Publication Status: Issued
 Pages: 6
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.jpclett.9b00242
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Project name : This work was supported by the Max Planck Society and theDeutsche Forschungsgemeinschaft. P.N. acknowledgesfinan-cial support by the DFG project NA394/2-1.
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Title: The Journal of Physical Chemistry Letters
  Abbreviation : J. Phys. Chem. Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: 6 Volume / Issue: 10 (6) Sequence Number: - Start / End Page: 1206 - 1211 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/1948-7185