Preferential solvation and solvatochromic behaviour of quinoline in binary alkan-1-ol/N,N-dimethylformamide solvent mixtures

The results show that the solvatochromic response model of Q dissolved in binary HBD/DMF mixtures was different from the HBD/cyclohexane solvent mixtures studied before. The studies reveal a synergistic solvation behaviour for higher mole fractions of DMF and a preferential solvation of Q by the less polar part of the entity (or complex S12) formed between both components of the mixture or by the DMF molecule. The Q-solvent interactions compete with homo- and heteromolecular solvent-solvent interactions.