Investigation on solute–solvent interactions of glycine, l -alanine and l -valine in aqueous tetraethylammonium iodide solutions at different temperatures with reference to volumetric and acoustic measurements

Sharma, Suresh Kumar; Singh, Gurpreet; Kataria, Ramesh; Kumar, Harsh

doi:10.1016/j.jct.2015.08.009

Cited by 11 publications

(1 citation statement)

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“…Ionic liquids are assumed to be the appropriate medium for studying protein stability . Thermodynamic studies on amino acids as a function of concentration and temperature in the presence of various additives have been performed to understand solute–solvent interactions. − Ionic liquids have been utilized in aqueous biphasic systems consisting of amino acids, to study the protein stability in the presence of ionic liquids that has attracted the attention of different researchers toward their physicochemical properties. Thermodynamic variables like temperature and pressure affect proteins in aqueous medium and play a key role in establishing a complete interpretation of the physical immutability .…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Thermodynamic Properties of Amino Acids in Aqueous Imidazolium-Based Ionic Liquid

2020

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Molecular interactions of amino acids with ionic liquids are significant to study the molecular stability and physicochemical properties of amino acids. Mixtures of amino acids l-leucine and N-acetyl-l-leucine + (0.005, 0.010, 0.030, and 0.050 mol·kg–1) aqueous solution of ionic liquid (1-butyl-3-methylimidazolium chloride) at temperature T = (288.15, 298.15, 308.15, and 318.15 K) have been studied by density and speeds of sound measurements. Volumetric properties have been obtained by utilizing data of density. Volumetric properties include apparent molar volumes, partial molar volumes at infinite dilution, limiting partial molar volumes of transfer at infinite dilution, apparent molar expansibility, etc. Similarly, speeds of sound measurements are utilized to calculate corresponding parameters like apparent molar isentropic compression, K ϕ,s, apparent molar isentropic compression at infinite dilution, K ϕ,s 0, and transfer compressibility at infinite dilution ΔK ϕ,s 0. Results confirmed the predominance of the hydrophilic–hydrophilic interaction over the hydrophobic–hydrophobic interaction in ternary solutions.

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