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  Pyrene, a Test Case for Deep-Ultraviolet Molecular Photophysics

Picchiotti, A., Nenov, A., Giussani, A., Prokhorenko, V., Miller, R. J. D., Mukamel, S., et al. (2019). Pyrene, a Test Case for Deep-Ultraviolet Molecular Photophysics. The Journal of Physical Chemistry Letters, 10(12), 3481-3487. doi:10.1021/acs.jpclett.9b01325.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0004-4674-B Version Permalink: https://hdl.handle.net/21.11116/0000-0004-C121-C
Genre: Journal Article

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 Creators:
Picchiotti, A.1, 2, Author           
Nenov, A.3, Author
Giussani, A.3, 4, Author
Prokhorenko, V.2, Author           
Miller, R. J. D.2, 5, Author           
Mukamel, S.6, Author
Garavelli, M.3, Author
Affiliations:
1Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, ou_persistent22              
2Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
3Dipartimento di Chimica Industriale, Università degli Studi di Bologna, ou_persistent22              
4Instituto de Ciencia Molecular, Universitat de València, ou_persistent22              
5Departments of Chemistry and Physics, University of Toronto, ou_persistent22              
6Department of Chemistry, University of California, ou_persistent22              

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 Abstract: We determined the complete relaxation dynamics of pyrene in ethanol from the second bright state, employing experimental and theoretical broadband heterodyne detected transient grating and two-dimensional photon echo (2DPE) spectroscopy, using pulses with duration of 6 fs and covering a spectral range spanning from 250 to 300 nm. Multiple lifetimes are assigned to conical intersections through a cascade of electronic states, eventually leading to a rapid population of the lowest long-living excited state and subsequent slow vibrational cooling. The lineshapes in the 2DPE spectra indicate that the efficiency of the population transfer depends on the kinetic energy deposited into modes required to reach a sloped conical intersection, which mediates the decay to the lowest electronic state. The presented experimental–theoretical protocol paves the way for studies on deep-ultraviolet-absorbing biochromophores ubiquitous in genomic and proteic systems.

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Language(s): eng - English
 Dates: 2019-05-092019-05-132019-05-132019-06-20
 Publication Status: Issued
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.jpclett.9b01325
 Degree: -

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Project name : The fluorescence spectrum was taken in the laboratory of Prof. Dr. Henning Tidow (Universitaet Hamburg). This work was supported by the European Research Council Advanced Grant STRATUS (ERC-2011-AdG No. 291198).
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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: 7 Volume / Issue: 10 (12) Sequence Number: - Start / End Page: 3481 - 3487 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/1948-7185