Study of Preferential Solvation in Mixed Binary Solvent as a Function of Solvent Composition and Temperature by UV−Vis Spectroscopic Method

Laha, Ashis Kumar; Das, Parimal; Bagchi, Sanjib

doi:10.1021/jp0121116

Cited by 44 publications

(30 citation statements)

References 26 publications

(41 reference statements)

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“…In our studies with binary solvent mixtures, it has been noted that electron spectroscopic studies provide a method for the estimation of K 12 . 15 It has also been found that K 12 values for binary solvent mixtures are smooth functions of the ratio of the mole fractions of the solvent components, x 1 /x 2 . Figure 3 shows the representative plots indicating composition dependence of K 12 for binary mixtures.…”

Section: Discussionmentioning

confidence: 97%

Use of a Solvatochromic Probe for Study of Solvation in Ternary Solvent Mixture

Ray

Bagchi

2004

J. Phys. Chem. A

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Solvation characteristics of 2,6-diphenyl-4-(2,4,6-triphenyl-1-pyridino)phenolate in completely miscible ternary solvent mixtures (viz., methanol + acetone + water, methanol + acetone + benzene, and methanol + chloroform + benzene) have been studied by using an electronic spectroscopic procedure. The transition energy (E) corresponding to the charge-transfer band maximum of the solute in a ternary solvent mixture differs significantly from the average E-values in the component solvents weighted by the mole fraction of the solvents. A two-phase model of solvation has been invoked to explain the results. The excess or deficit of solvent components in the local region of the solute molecule over that in the bulk has been estimated using the knowledge of solvation in binary solvent mixtures.

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Section: Discussionmentioning

confidence: 97%

Use of a Solvatochromic Probe for Study of Solvation in Ternary Solvent Mixture

Ray

Bagchi

2004

J. Phys. Chem. A

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“…The binary solvent mixture is considered to be ideal, when the absorption energy at the maximum absorbance, is a linear combination of the absorption energy at the maximum absorbance in pure solvent, weighted by their mole fraction in the solvent mixture. This is given by eqn (3) .

E_{l i n e a r, b u l k}

is the absorption energy at the maximum absorbance in an ideal solvent mixture.

true E_{l i n e a r, b u l k} = x_{n} E_{n} + x_{p} E_{p}

…”

Section: Theorymentioning

confidence: 99%

“…The change in the absorption maxima for different composition has been analysed with the help of approach used by Kauffman et al . and other recent studies . At lower mole fraction of alcohol, PNA shows synergistic solvation behaviour.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Water at the Hydrophobic Interface of Alkyl Group of Alcohol with p‐Nitro‐Aniline Charge Transfer State

2020

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The evolution of photo‐induced intra molecular charge transfer (ICT) transition energy of p‐nitro‐aniline (PNA), with respect to the mole fraction of alcohol in alcohol water mixture has been used to study, the interaction of hydrophobic hydration ‐shell of linear alcohols with PNA‐ICT state. The linear alcohol ranges from methanol to propanol. The plot of absorption energy of PNA charge transfer transition versus mole fraction of alcohol shows the following features. At lower mole fraction of alcohol, the absorption energy of PNA versus mole‐fraction of alcohol plot at first, decreases below the absorption energy of PNA recorded in pure water and alcohol, goes through a minimum and then increases. Similar behaviour is obtained even after subtracting the contribution from dielectric non‐ideality. The behaviour at lower mole fraction thus indicates the modification of specific interaction of PNA with water due to the presence of alcohol. Further, the absorption energy minimum shifts towards lower mole fraction of alcohol as the chain length of alcohol increases. These results, thus reveals the interaction of PNA with the modified water structure at the hydrophobic interface of alkyl group and supports the current understanding of hydrophobic hydration. To our knowledge, this study for the first time reveals that, hydration shell around hydrophobic group has higher ability to stabilize the PNA‐ICT state by hydrogen bonding interaction compared to bulk water.

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“…Thus, the importance of studying binary (and higher order) solvent systems is obvious. A major question which comes up in these studies is to what extent is there preferential solvation by one of the solvents, which can be related to the specific solute-solvent and solvent-solvent 1 interactions as well as dipole-dipole interactions, the latter being quite general. These are measured most often by plotting curves of some spectroscopic 2 property (maximum wavelength, peak height, etc.)…”

Section: Introductionmentioning

confidence: 99%

Can factor analysis be applied to spectra taken in binary solvent mixtures?

Thurler

Souza

Maeder

et al. 2009

J. Braz. Chem. Soc.

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Sugere-se aqui que, apesar das inconsistências lógicas, o método de análise fatorial pode ser aplicado, em muitos casos, aos espectros de fluorescência e absorção de sistemas de corantes em solventes binários. Os limites para a aplicação bem sucedida do método são derivados. A idéia foi aplicada aos sistemas de quatro corantes em duas soluções diferentes de solvente binário. Os resultados obtidos indicaram que este método geralmente gerava curvas mais lisas, num gráfico de contribuição de uma das duas bandas contribuintes aos espectros experimentais contra a fração molar de um dos solventes, quando comparado com o método normalmente utilizado de graficar a posição do pico máximo contra a fração molar de um dos solventes.It is suggested that, in spite the logical inconsistencies, factor analysis can be applied in many cases to fluorescence and absorption spectra of dyes in binary solvent mixtures. Limits as to when this application will be successful are derived. This idea was applied to four different dyes in two different binary solvent mixtures and was generally found to generate smoother curves, plotting the contribution of one of the two contributing bands to the experimental spectrum vs. solvent component mole fraction, as compared to those that are generated when one uses the normally applied method of plotting maximum peak position vs. solvent component mole fraction.

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Study of Preferential Solvation in Mixed Binary Solvent as a Function of Solvent Composition and Temperature by UV−Vis Spectroscopic Method

Cited by 44 publications

References 26 publications

Use of a Solvatochromic Probe for Study of Solvation in Ternary Solvent Mixture

Use of a Solvatochromic Probe for Study of Solvation in Ternary Solvent Mixture

Interaction of Water at the Hydrophobic Interface of Alkyl Group of Alcohol with p‐Nitro‐Aniline Charge Transfer State

Can factor analysis be applied to spectra taken in binary solvent mixtures?

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