Polarity of Some [NR1R2R3R4]+[Tf2N]−Ionic Liquids in Ethanol: Preferential Solvation versus Solvent–Solvent Interactions

2012 ◽  
Vol 57 (10) ◽  
pp. 2702-2709 ◽  
Author(s):  
Maria-Luísa C. J. Moita ◽  
Ângela F. S. Santos ◽  
João F. C. C. Silva ◽  
Isabel M. S. Lampreia
Keyword(s):  
Ionic Liquids ◽  
Preferential Solvation ◽  
Solvent Interactions ◽  
Solvent Solvent

Solvatochromism in some cosolvent mixtures of sulfolane and aliphatic alcohols: a tool to predict preferential solvation

2020 ◽  
Vol 98 (3) ◽  
pp. 134-144 ◽  
Author(s):  
Mohsen Sarijloo ◽  
Morteza Jabbari ◽  
Ali Farajtabar
Keyword(s):  
Binary Mixtures ◽  
Preferential Solvation ◽  
Solvation Shell ◽  
Solvent Exchange ◽  
Solvent Interactions ◽  
Spectral Shifts ◽  
Fraction Distribution ◽  
Solvation Parameters ◽  
Absorption Measurements ◽  
Solvent Solvent

The phenomenon of solvatochromism for three indicator solutes, namely para-nitroaniline, N,N-dimethyl-p-nitroaniline, and the betaine dye 4-(2,4,6-triphenylpyridinium-1-yl)-2,6-diphenylphenolate, was studied at 303.15 ± 0.1 K by means of UV–vis absorption measurements. The spectral shifts of these dyes in different mole fractions (0.0–1.0) of binary mixtures of sulfolane with eight alcohols (methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, iso-butanol, tert-butanol) were analyzed to investigate preferential solvation of them in terms of both the solute–solvent and the solvent–solvent interactions. A modified theoretical model (solvent exchange model) was successfully employed to calculate preferential solvation parameters and to obtain information into the contribution of intermolecular interactions to the local and bulk mole fraction distribution of solvation species. It was found that the solvation shell of the dyes is mainly affected by the solvent–solvent interactions, and in all binary mixtures, the studied solvation behavior was non-ideal.

Probing solvent–solvent and solute–solvent interactions in surfactant binary mixtures: solvatochromic parameters, preferential solvation, and quantum theory of atoms in molecules analysis

RSC Advances ◽  
2016 ◽  
Vol 6 (22) ◽  
pp. 18515-18524 ◽  
Author(s):  
Mona Kohantorabi ◽  
Mostafa Fakhraee ◽  
Hadi Salari ◽  
Mohammad Reza Gholami
Keyword(s):  
Quantum Theory ◽  
Binary Mixtures ◽  
Organic Solvents ◽  
Preferential Solvation ◽  
Atoms In Molecules ◽  
Solvatochromic Parameters ◽  
Solvent Interactions ◽  
Solvent Solvent

The behaviour of solvatochromic absorbance probes within binary mixtures of TX-100/organic solvents.

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