AbstractDiverse biological applications of triazole molecules, makes study of these compounds intriguing. Since, the solvent
effect causes different behavior in these compounds, a quantitative study of solvent effects on photo-physical properties
of two triazole compounds, with similar molecular skeleton and various substituent groups on triazole ring were studied,
at room temperature. The solute's photo-physical behavior strongly depends on the solute and solvent's nature, along with
the solvent-solute interactions. In order to understand the effect of intermolecular interactions on spectral behaviors of
these materials, and to conceive the nature and extend of solvent-solute interactions, the spectral variations were
analyzed via the linear solvation energy relationships concept, suggested by Kamlet and Taft. In addition, by means of
solvatochromic method, ground and excited states dipole moments as well as dipole moment variations, from ground to
excited states, were calculated, in different media.