کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5408523 | 1506537 | 2017 | 7 صفحه PDF | دانلود رایگان |
- Apparent molar properties of dipeptide in aqueous ILS
- Determination of hydration number
- Discussion on solute-co-solute interactions
- Glycylglycine act as structure breaker as well as structure maker.
The apparent molar volume and isentropic compression of glycylglycine in aqueous 1-methylimidazolium chloride, [mim][Cl], 1-ethyl-3-methylimidazolium chloride [C2mim][Cl], and 1-methyl-3-octylimidazolium chloride [C8mim][Cl] solutions have been calculated from the measured experimental data on density and speed of sound at temperature, T = 288.15, 298.15 and 308.15 K. The apparent molar volumes at infinite dilution, VÏ0 and the apparent isentropic molar compression at infinite dilution KÏ , S0, were also calculated. Furthermore, apparent specific volumes, apparent molar expansivity, EÏ0, Hepler's constant values, âEÏ0âTP and hydration numbers, nH, have been evaluated to support the conclusions obtained from the volumetric and acoustic studies. The Hepler's constant values were found negative which indicating the peptide under study is predominantly a structure breaker due to hydrophobic hydration of small peptide in aqueous ionic liquid.
Journal: Journal of Molecular Liquids - Volume 234, May 2017, Pages 187-193