Abstract
The molecular geometry, spectral luminescence properties, proton acceptor ability during the formation of H bonded complexes and monocation formation have been studied for a series of the new near-UV efficient laser dyes: 1,2,5-triphenyltriazole-1,3,4 (TPT) derivatives. It has been shown that the initial proton attachment to TPT molecules is directed to the triazole cycle imine nitrogen atom. The possible reason for the observed abnormally high fluorescence Stokes shifts typical of TPT neutral and cationic forms is discussed. The static mechanism has been demonstrated for TPT fluorescence quenching in acidic media.
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