HIGHER EXCITED-STATES OF AROMATIC-HYDROCARBONS - POLARIZED VUV FLUORESCENCE EXCITATION-SPECTRA OF ANTHRACENE AND PYRENE IN ARGON MATRICES AT 15-K USING SYNCHROTRON-RADIATION

Synchrotron radiation was applied to measure polarized fluorescence and fluorescence excitation spectra of anthracene and pyrene isolated in argon matrices up to an excitation energy of 75000 cm-1. The polarization data allow an assignment of most bands that appear in the energy range of 45000 to 75000 cm-1. The order of the observed transitions is in general agreement with predictions of semiempirical calculations.