TITLE

D[sub 1]([sup 2]B[sub 2g])→D[sub 0]([sup 2]A[sub u]) fluorescence from the matrix-isolated perylene cation following laser excitation into the D[sub 5]([sup 2]B[sub 3g]) and D[sub 2]([sup 2]B[sub 3g]) electronic states

AUTHOR(S)
Chillier, Xavier D. F.; Stone, Bradley M.; Joblin, Christine; Salama, Farid; Allamandola, Louis J.
PUB. DATE
April 2002
SOURCE
Journal of Chemical Physics;4/1/2002, Vol. 116 Issue 13, p5725
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Fluorescence spectra of the perylene cation, isolated in an argon matrix and pumped by direct laser excitation via the D[sub 2](²B[sub 3g])←D[sub 0](²A[sub u]) and D[sub 5](²B[sub 3g])←D[sub 0](²A[sub u]) transitions, are presented. Direct excitation into the D[sub 5] or D[sub 2] states is followed by rapid nonradiative relaxation to D[sub 1] that, in turn, relaxes radiatively. Excitation spectroscopy across the D[sub 2](²B[sub 3g])←D[sub 0](²A[sub u]) transition near 730 nm shows that site splitting plays little or no role in determining the spectral substructure in the ion spectra. Tentative assignments for ground state vibrational frequencies are made by a comparison of spectral intervals with calculated normal mode frequencies, with the strongest IR bands leading to the most intense vibronic bands.
ACCESSION #
6365852

 

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