Time-resolved single vibronic level fluorescence spectroscopy: Glyoxal

Fluorescence originating from a single vibronic level of glyoxal (51) has been simultaneously resolved with respect to wavelength and time. The resultant time-resolved single vibronic level (TRSVL) spectra provide data concerning excited-state decay processes such as vibrational relaxation and intersystem crossing from individual vibronic levels. A vibronic analysis of the 51 fluorescence spectrum and comparisons with spectra obtained without time-resolution are presented