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  Excited-state dynamics of guanosine in aqueous solution revealed by time-resolved photoelectron spectroscopy: experiment and theory

Buchner, F., Heggen, B., Ritze, H.-H., Thiel, W., & Lübcke, A. (2015). Excited-state dynamics of guanosine in aqueous solution revealed by time-resolved photoelectron spectroscopy: experiment and theory. Physical Chemistry Chemical Physics, 17(47), 31978-31987. doi:10.1039/C5CP04394H.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-32CC-6 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-32CD-4
Genre: Journal Article

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 Creators:
Buchner, Franziska1, Author
Heggen, Berit2, Author           
Ritze, Hans-Hermann1, Author
Thiel, Walter2, Author           
Lübcke, Andrea1, Author
Affiliations:
1Max-Born-Institut für nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Straße 2A, 12489 Berlin, Germany , ou_persistent22              
2Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445590              

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 Abstract: Time-resolved photoelectron spectroscopy is performed on aqueous guanosine solution to study its excited-state relaxation dynamics. Experimental results are complemented by surface hopping dynamic simulations and evaluation of the excited-state ionization energy by Koopmans' theorem. Two alternative models for the relaxation dynamics are discussed. The experimentally observed excited-state lifetime is about 2.5 ps if the molecule is excited at 266 nm and about 1.1 ps if the molecule is excited at 238 nm. The experimental probe photon energy dependence of the photoelectron kinetic energy distribution suggests that the probe step is not vertical and involves a doubly-excited autoionizing state.

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Language(s): eng - English
 Dates: 2015-07-272015-11-022015-11-092015-12-21
 Publication Status: Issued
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/C5CP04394H
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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: - Volume / Issue: 17 (47) Sequence Number: - Start / End Page: 31978 - 31987 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1