Single vibronic level fluoresence from aniline

Abstract
Gas phase fluorescence spectra of 15 vibronic levels in 1B2 aniline are described. The emission spectra of single vibronic levels in aniline have well separated vibrational structure. A continuum background seen in a few cases is shown to be due to sequence congestion in the absorption spectrum, not to intramolecular vibrational energy transfer.