title: Electronic spectroscopic study of solvation of a ketocyanine dye in ternary solvent mixtures.
abstract: Solvation characteristics in ternary solvent mixtures have been studied by monitoring the solvent-sensitive electronic absorption band of a ketocyanine dye in two ternary solvent mixtures, water + ethanol + benzene and water + ethanol + cyclohexane, in which one of the pairs are partially miscible. Investigations have been done in a completely miscible region including the binodal curve. The maximum energy of absorption (E) of the solute in a ternary solvent mixture differs significantly from the mole fraction average of the E-values in the component solvents. Results in the corresponding binary solvent mixtures also show a deviation of the E-value from the mole fraction averaged E-values, indicating preferential solvation by a component solvent. The results in ternary solvent mixture have been explained in terms of a realistic model of solvation using the results on binary solvation.
authors.affiliation: Department of Chemistry, Burdwan University, Burdwan 713104, India.
authors.forename: Angshuman
authors.initials: A
authors.lastname: Maitra
authors.forename: Sanjib
authors.initials: S
authors.lastname: Bagchi