Time-resolved fluorescence spectra of cis-stilbene in hexane and acetonitrile

Fluorescence decays monoexponentially with 0.21 ps in acetonitrile and 0.75 ps in hexane, independently on the excitation wavelength. Transient fluorescence spectra from cis-stilbene in solution are recorded with 0.24 ps instrument response by a Kerr–Shutter upon excitation at 283 and 267 nm. The fl...

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Bibliographic Details
Published inChemical physics letters Vol. 489; no. 1; pp. 44 - 47
Main Authors Sajadi, M., Dobryakov, A.L., Garbin, E., Ernsting, N.P., Kovalenko, S.A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2010
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Summary:Fluorescence decays monoexponentially with 0.21 ps in acetonitrile and 0.75 ps in hexane, independently on the excitation wavelength. Transient fluorescence spectra from cis-stilbene in solution are recorded with 0.24 ps instrument response by a Kerr–Shutter upon excitation at 283 and 267 nm. The fluorescence decay shows no dependence on the excitation wavelength and proceeds monoexponentially with 0.21 ps in acetonitrile and 0.75 ps in hexane. No spectral shift or distortion of the fluorescence band is observed during the decay. Fluorescence contribution from 4a,4b-dihydrophenanthrene (DHP), produced in a competing reaction channel, was not detectable. From comparison with trans-fluorescence, the emission oscillator strength of cis-stilbene is determined to be 0.19 in hexane and 0.21 in acetonitrile.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2010.02.034