Preferential solvation of Brooker's merocyanine in binary solvent mixtures composed of formamides and hydroxylic solvents.

@article{Bevilaqua2004PreferentialSO,
  title={Preferential solvation of Brooker's merocyanine in binary solvent mixtures composed of formamides and hydroxylic solvents.},
  author={Tharly Bevilaqua and Domingas C da Silva and Vanderlei Gageiro Machado},
  journal={Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy},
  year={2004},
  volume={60 4},
  pages={
          951-8
        }
}
The ET polarity values of 4-[(1-methyl-4(1H)-pyridinylidene)-ethylidene]-2,5-cyclohexadien-1-one (Brooker's merocyanine) were collected in mixed-solvent systems comprising a formamide [N,N-dimethylformamide (DMF), N-methylformamide (NMF) or formamide (FA)] and a hydroxylic (water, methanol, ethanol, propan-2-ol or butan-1-ol) solvent. Binary mixtures involving DMF and the other formamides (NMF and FA) as well as NMF and FA were also studied. These data were employed in the investigation of the… Expand
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ABSTRACT The UV-Vis spectroscopic behavior of the solvatochromic dye 4-[(1-methyl-4(1H)-pyridinylidene)-ethylidene]-2,5-cyclohexadien-1-one (Brooker's merocyanine) was investigated in aqueousExpand
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Solute-solvent and solvent-solvent interactions in the preferential solvation of Brooker's merocyanine in binary solvent mixtures
The ET polarity values of 4-[(1-methyl-4(1H)-pyridinylidene)ethylidene]-2,5-cyclohexadien-1-one, better known as Brooker's merocyanine, were collected in binary mixtures comprising a non-proticExpand
Preferential solvation of a hydrophobic probe in binary mixtures comprised of a nonprotic and a hydroxylic solvent: A view of solute-solvent and solvent-solvent interactions
The fluorescence of pyrene, a hydrophobic probe, was investigated in binary mixtures comprising a nonprotic [acetonitrile, N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and tetrahydrofuraneExpand
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The spectroscopic properties of solvent soluble derivatives of Brooker's simple merocyanine 4-[(1-methyl-4(1H)-pyridinylidene)ethylidene]-2,5-cyclohexadien-1-one, which can in principle exist in twoExpand
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The absorption and emission spectra of DTBSB (the 2,6-di-tert-butyl derivative of stilbazolium betaine (SB)), in its neutral and protonated forms, have been measured in 28 solvents. ThoseExpand
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The kinetics of the reactions of 1-fluoro-2,4-dinitrobenzene with morpholine and piperidine were studied at 25 °C in several binary solvent mixtures of the polar aprotic hydrogen bond acceptorExpand
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Studies on the solvatochromic behaviour of N-methyl-4- and N-methyl-2-[(4-dimethylaminophenyl)iminomethyl]pyridinium iodide dyes in a variety of solvents and the preferential solvation of the formerExpand
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The results suggest that the addition of water to acetone reduces abruptly the rate of substitution due to the preferential solvation (PS) of the phenoxide ion by the hydrogen-bonding donor (HBD) solvent. Expand
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