Spectroscopy of large molecular complexes in supersonic jets

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In this paper we report the results of an experimental study of laser-induced fluorescence spectroscopy of M·Xn van der Waals complexes, consisting of medium-sized molecules (X=methane, carbon tetrachloride, ammonia, water, methanol, acetonitrile, benzene, and toluene) bound to a large aromatic molecule (M=tetracene and fluorene). These large complexes were synthesized in pulsed supersonic jets of He seeded with M and X. The spectral features assigned to S0→S1 electronic-vibrational excitations of these large M·X1 complexes, which are characterized by narrow linewidths (FWHM) of 2-4 cm -1, were attributed to three distinct categories: (i) A vibrationless excitation of M·X1, (ii) vibrational excitations of M in M·X1, and (iii) excitations of the vibrations involving relative motion of M and X in the M·X1 complex.

Original languageEnglish
Pages (from-to)3445-3454
Number of pages10
JournalThe Journal of Chemical Physics
Issue number6
StatePublished - 1983


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