Absorption and emission spectra of salicylaldehyde azo and related two Schiff bases with the same molecular skeletons and different functional groups have been studied in various solvents with different polarities. The solute's photo-physical behavior depends strongly on the solvent-solute interactions and solvent microenvironment as well as resonance structures of the salicylaldehyde azo and related Schiff bases. In order to understand the effects of intermolecular interactions on spectral behavior of these substances and to conceive nature and extent of solvent-solute interactions the spectral variations were analyzed by the linear solvation energy relationship concept. In addition, the variations of dye dipole moments, from ground to excited states, were investigated in solvent media by means of solvatochromic method. (C) 2013 Elsevier B.V. All rights reserved.
机构:
Department of Chemistry, Faculty of Art and Science, Harran University, Sanliurfa,TR-63190, Turkey
Research Centre for Science and Technology, Harran University, Sanliurfa,63190, TurkeyDepartment of Chemistry, Faculty of Art and Science, Harran University, Sanliurfa,TR-63190, Turkey
Kilic, Ahmet
Söylemez, Rahime
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机构:
Department of Chemistry, Faculty of Art and Science, Harran University, Sanliurfa,TR-63190, TurkeyDepartment of Chemistry, Faculty of Art and Science, Harran University, Sanliurfa,TR-63190, Turkey