High resolution laser induced fluorescence excitation spectroscopy of jet-cooled terrylene

Hoheisel, Gerald; Hese, A.

doi:10.1016/j.jms.2005.11.007

Cited by 5 publications

(2 citation statements)

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“…There is also some correspondence between our observations and the data reported in reference 11 for terrylene in an argon continuous jet. The three transitions A (19 223.5 cm -1 ), B (19 237.8 cm -1 ), and C (19 251.2 cm -1 ) observed in ref are within contours of respective bands observed by us for terrylene in argon (compare Figure ).…”

Section: Resultssupporting

confidence: 84%

“…The S 0 (1 1 A g ) → S 1 (1 1 B 1u ) transition in terrylene is allowed by symmetry and polarized along the long molecular axis. ,,, The energy of this transition depends on the interactions of terrylene with the environment 2,4-7,9 and is estimated to be located between 19 181 cm -1 and 19 203 cm -1 for the free terrylene molecule. , High-resolution measurements recently performed by Hoheisel and Hese placed the 0−0 transition at 19 237.8 cm -1 .…”

Section: Introductionmentioning

confidence: 99%

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Fluorescence Studies of Terrylene in a Supersonic Jet: Indication of A Dark Electronic State Below the Allowed Transition

et al. 2007

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Jet-cooled terrylene has been studied in helium buffer gas using a pulsed nozzle by means of laser-induced fluorescence. Fluorescence excitation and two-color depletion experiments (resulting in hole burning spectra) are presented. Analysis of the spectra leads to the conclusion that another excited electronic state is present in the vicinity of the allowed 1B1u state. Assuming (according to previous literature suggestions Karabunarliev, S.; Baumgarten, M.; Müllen, K. J. Phys. Chem. A 1998, 102, 7029) that this dark state is the 21Ag state, we discuss the vibrational structure of the fluorescence excitation spectrum in terms of two manifolds of vibronic states belonging to Sd(21Ag) and S1(1B1u) states. The anomalous shift between excitation and dispersed fluorescence spectra observed earlier for terrylene in a neon matrix is discussed as a consequence of terrylene electronic relaxation to the low-energy dark state.

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Section: Resultssupporting

confidence: 84%