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  Prompt fluorescence from biphenylene in liquid solution: Absence of detectable S2→S0 fluorescence and its implications, vibrational structure and polarization of S1→S0 fluorescence, and orientational relaxation of molecules in S1.

Nickel, B., & Hertzberg, J. (1989). Prompt fluorescence from biphenylene in liquid solution: Absence of detectable S2→S0 fluorescence and its implications, vibrational structure and polarization of S1→S0 fluorescence, and orientational relaxation of molecules in S1. Chemical Physics, 132(1-2), 219-234. doi:10.1016/0301-0104(89)80090-4.

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Nickel, B.1, Author              
Hertzberg, J., Author
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1Department of Spectroscopy and Photochemical Kinetics, MPI for biophysical chemistry, Max Planck Society, ou_578624              

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 Abstract: The prompt emission from S0→S2 photoexcited biphenylene in 3-methylpentane has been investigated. No prompt S2→S0 fluorescence has been observed. The implications of this negative result are discussed. It is shown that lengthening of the radiative lifetime of S2 due to intermediate strong S2-S1 coupling is the likely cause of the absence of detectable S2-S0 fluorescence. The observable resonance Raman lines of biphenylene can be assigned to totally symmetric vibrations. The position of S1,0 is determined by a vibrational analysis of the S1→S0 fluorescence. The polarization degree P of the S1→S0 fluorescence is positive. From the dependence of P on temperature and viscosity, orientational relaxation times of biphenylene in S1 are determined with Perrin's formula.

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Language(s): eng - English
 Dates: 1989-04
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.1016/0301-0104(89)80090-4
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Title: Chemical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 132 (1-2) Sequence Number: - Start / End Page: 219 - 234 Identifier: -