Jet-cooled naphthalene. II. Single vibronic level fluorescence spectra
Single vibronic level fluorescence spectra have been measured for naphthalene cooled in a supersonic free jet. Ten spectra in all have been recorded, the excitation energies ranging from 0 to 4029 cm-1 above the 1B3u(π7Pi;*)←1Ag origin. These results reveal extensive intramolecular vibrational redistribution (IVR) occurring in the absence of collision on a time scale much faster than fluorescence even at vibrational energies as low as 2570 cm-1. Comparison of the observed spectra with model calculations shows that this IVR process involves most of the harmonic overtone/combination basis states of overall blg symmetry having energies within the absorption line profile.
Publication Source (Journal or Book title)
The Journal of Chemical Physics
Beck, S., Hopkins, J., Powers, D., & Smalley, R. (1980). Jet-cooled naphthalene. II. Single vibronic level fluorescence spectra. The Journal of Chemical Physics, 74 (1), 43-52. https://doi.org/10.1063/1.440850