MIXED CRYSTAL SPECTROSCOPY OF SOME AZAAZULENES AND AZULENE DERIVATIVES

Abstract

The electronic absorption and luminescence spectra of 1,3-diazaazulene, 2-(X)-1-monoazaazulenes and 2-phenylazulene are discussed. Special attention is given to their medium dependence, the breakdown of mirror symmetry between the absorption and fluorescence spectra, and the similarities (also lack of) between the spectroscopy of the above systems and that of azulene itself.