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  Fluorescence excitation of isolated, jet-cooled 3-hydroxyflavone: The rate of excited state intramolecular proton transfer from homogeneous linewidths.

Ernsting, N. P., & Dick, B. (1989). Fluorescence excitation of isolated, jet-cooled 3-hydroxyflavone: The rate of excited state intramolecular proton transfer from homogeneous linewidths. Chemical Physics, 136(2), 181-186. doi:10.1016/0301-0104(89)80045-X.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-2E7C-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-2E7F-9
Genre: Journal Article

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Ernsting, N. P.1, Author              
Dick, B.1, Author              
Affiliations:
1Abteilung Laserphysik, MPI for biophysical chemistry, Max Planck Society, ou_578547              

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 Abstract: The laser-induced fluorescence excitation of 3-hydroxyflavone, cooled by seeding in a supersonic expansion of He, has been investigated in the wavenumber range 28000–28500 cm−1. The vibronic origin of the S0-S1 (ππ*) electronic transition of the unperturbed normal molecular form was found at 28080.3 cm−1 (3560.21 Å). The excitation spectrum is characterised by several progressions with vibrational spacing of 45 cm−1, and by severe spectral congestion at excess vibrational energy above 225 cm−1. The prominent vibronic bands are best represented by Lorentzian lineshapes. They are homogeneously broadened with widths (deconvoluted fwhm) varying from 4.1 to 2.6 cm−1. The corresponding vibronic lifetimes, in the range 1.3–2.0 ps, are short because of excited-state intramolecular proton transfer.

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Language(s): eng - English
 Dates: 2002-01-111989-09-15
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1016/0301-0104(89)80045-X
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Title: Chemical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 136 (2) Sequence Number: - Start / End Page: 181 - 186 Identifier: -