Partial Molar Volume, Ionization, Viscosity and Structure of Glycine Betaine in Aqueous Solutions

Pitkänen, Ilkka; Suuronen, Jaana; Nurmi, Juha

doi:10.1007/s10953-010-9618-6

Cited by 27 publications

(11 citation statements)

References 18 publications

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“…Assuming that the GB zwitterion is a sphere with a radius of 0.34 nm, Shikata 15 has derived a rough estimate of 31 as the number of water molecules within 0.30 nm from the sphere surface of GB. The radius of 0.34 nm is justified by the following calculation: from the partial molar volume of 98.43 cm 3 /mol (at infinite dilution of GB, 25 °C), 42 one finds that the sphere radius is 0.339 nm. Fornili's group has obtained an average number of the first-shell water molecules as 24.5 19 or 23.2 20 from their hybrid quantummechanics/molecular-mechanics (QM/MM) molecular dy- namics (MD) simulations.…”

Section: Discussionmentioning

confidence: 99%

Hydration of the Zwitterionic and Protonated Forms of Glycine Betaine Probed by Soft X-ray Emission Spectroscopy Coupled with Chemometrics

2021

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Soft X-ray absorption and emission spectra of glycine betaine (GB) have been measured at the O K-edge in neutral and strongly acidic solutions. The absorption spectra of the neutral solutions have a resonance peak at 532.6 eV, assigned to the transition to the π* orbital, whereas in the acidic solutions, the peak is shifted by −0.3 eV. The emission spectra taken as a function of the GB concentration have been analyzed by means of a modified classical least-squares regression method to obtain the hydration number of the solute. The analysis is successful when the emission spectra have been acquired at the energy of a slightly detuned resonance, giving 28 and 24 as the minimum values for the zwitterionic and protonated GB, respectively. The number of 28 accords with the reported values for the number of water molecules in the first hydration layer of the zwitterion and is greater than that obtained by other experimental techniques. The obtained numbers are used to discuss the hydration structure of GB with the aid of ab initio molecular orbital calculations. The hydration structure of the protonated form of GB is explored for the first time.

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Section: Discussionmentioning

confidence: 99%

Hydration of the Zwitterionic and Protonated Forms of Glycine Betaine Probed by Soft X-ray Emission Spectroscopy Coupled with Chemometrics

2021

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“…The value of dB/dT is an extent of activation energy essential for the viscous flow in solution. The measurement of dB/dT is indicative towards the structure making or structure breaking ability than sign or magnitude of the Bcoefficient [43][44][45]. Viscosity B-coefficients of L-Asparagine solutions along with dB/dT values in different concentrations of the ILs, BTMAC and BTEAC at (298.15, 303.15 and 308.15) K and pressure at 1.013barare given in Table 15 and Table 16, respectively.…”

Section: Viscositymentioning

confidence: 99%

Physicochemical investigation of L-Asparagine in green solvent arrangements with the manifestation of solvation consequences

Roy¹,

Majumder²,

Rajbanshi³

et al. 2022

World J. Adv. Res. Rev.

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Solution behaviour prevailing in L-Asparagine in two aqueous ionic liquid solutions, namely (Benzyl tri–methyl ammonium chloride; Benzyl tri-ethyl ammonium chloride) have been studied by investigation of physico-chemical parameters; density, viscosity, refractive index, conductance and surface tension measurement respectively. The nature of interactions occurring in the solution have been calculated on the basis of apparent molar volume, viscosity A and B-coefficient, molar refraction at 298.15K,303.15K,308.15K and at 0.001m, 0.003m, 0.005m concentrations. The limiting apparent molar volumes (φV0) obtained from Masson equation, viscosity parameters, A and B coefficients obtained from Jones-Doles equation, Molar refraction (RM) from the Lorentz-Lorenz equation that describe the nature of solute-solute and solute-solvent interactions in the solution. Specific Conductance of the experimental solution, which applied to ascertain the ionic nature of the system. The different thermodynamic data, Δμ10≠, Δμ20≠, ΔH0≠, and TΔS0≠ also suggest the presence of strong interactions in the studied systems. The various types of interactions existing among amino acids in presence of ionic liquids which are the protein backbone would advance a many-dimensional challenge in the arena of solution chemistry. Studies of such systems could be forward-thinking further using the correlated results of the investigation.

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“…The value of dB/dT is a measure of activation energy required for the viscous flow in solution. This is the reason, why the measure of dB/dT is indicative towards the structure making or structure breaking ability than sign or magnitude of the B-coefficient [39][40][41] . Viscosity B-coefficients of L-Aspartic acid and L-Glutamic acid solutions along with dB/dT values in different concentrations of IL at (293, 303 and 313) K are given in Table 11(a) and Table 11(b), respectively.…”

Section: Viscositymentioning

confidence: 99%

Exploration of Solvation Consequences of Some Biologically Potent Molecules in Aqueous Ionic Liquid Solutions with the Manifestation of Molecular Interactions

2021

JCBSC

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L-Aspartic and L-Glutamic acid (two solute molecules) interact with an ionic liquid (Benzyl tri-methyl ammonium chloride) in aqueous medium. The interactions have been explained on the basis of some parameters (apparent molar volume, viscosity B-coefficient, molar refraction, specific conductance) at different temperatures and different concentrations from density, viscosity, refractive index, conductance measurements, respectively. Using Masson equation, the experimental slopes and the limiting apparent molar volumes are obtained which explain the solute-solute and solute-solvent interactions. Viscosity parameters, A and B obtained from Jones-Doles equation explained the solute-solute and solute-solvent interactions in the solution. Molar refraction has been calculated from the Lorentz-Lorenz equation. The specific conductance also explained the interaction properties.

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Partial Molar Volume, Ionization, Viscosity and Structure of Glycine Betaine in Aqueous Solutions

Cited by 27 publications

References 18 publications

Hydration of the Zwitterionic and Protonated Forms of Glycine Betaine Probed by Soft X-ray Emission Spectroscopy Coupled with Chemometrics

Hydration of the Zwitterionic and Protonated Forms of Glycine Betaine Probed by Soft X-ray Emission Spectroscopy Coupled with Chemometrics

Physicochemical investigation of L-Asparagine in green solvent arrangements with the manifestation of solvation consequences

Exploration of Solvation Consequences of Some Biologically Potent Molecules in Aqueous Ionic Liquid Solutions with the Manifestation of Molecular Interactions

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