Synthesis and thermodynamics studies of ionic liquid 1-methyl-3-pentylimidazolium bromide ([C 5 mim][Br]) with amino acids ( l -cysteine and N-acetyl- l -cysteine) at different temperatures

Kumar, Harsh; Verma, Akanksha; Chadha, Chanda

doi:10.1016/j.jct.2017.03.040

Cited by 10 publications

(2 citation statements)

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“…They can be used as a medium for studying the stability of proteins in aqueous solution . Amino acids (AAs) are the basic structural units of proteins and are regarded as ideal compounds for investigating the properties of proteins. − The interaction between amino acids and water plays an important role in the conformational stability of proteins . The various experimental parameters obtained from the density and speed of sound data help to procure valuable information regarding the presence of different kinds of intermolecular interactions present in the ternary (ionic liquid + water + amino acids) system.…”

Section: Introductionmentioning

confidence: 99%

“…5−7 The interaction between amino acids and water plays an important role in the conformational stability of proteins. 8 The various experimental parameters obtained from the density and speed of sound data help to procure valuable information regarding the presence of different kinds of intermolecular interactions present in the ternary (ionic liquid + water + amino acids) system. Proteins are biomolecules and foundational materials of life activities in the living organism, but the physicochemical properties of the biomolecules and their interactions with other compounds are very difficult to study due to the versatility in the structure and interactions.…”

Section: Introductionmentioning

confidence: 99%

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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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