Deepak Ekka

Host–guest inclusion complexes of α and β-cyclodextrins with α-amino acids

Studies of molecular inclusions of a congener series of guest amino acid molecules into the host cavity of α and β-cyclodextrins in aqueous solution have been focused on modern research gaining far reaching effect. With both the α and β-cyclodextrins, it is found that 1 : 1 hosts–guest inclusion complexes are formed with all the guest molecules at both low and high pH. The variation of the thermodynamic parameters with guest size and state are used to draw inferences about contributions to the overall binding from the driving forces, viz., hydrophobic effect, van der Waals forces, H-bonds, electrostatic forces, structural effect and configurational theory. The formation and comparative study of inclusion complexes have been analyzed by available data supplemented with surface tension, pH, density, viscosity, and refractive index.

Molecular interactions of α-amino acids insight into aqueous β-cyclodextrin systems

Qualitative and quantitative analysis of molecular interaction prevailing in glycine, l-alanine, l-valine and aqueous solution of β-cyclodextrin (β-CD) have been probed by thermophysical properties. Density (ρ), viscosity (η), and ultrasonic speed (u) measurements have been reported at different temperatures. The extent of interaction (solute–solvent interaction) is expressed in terms of the limiting apparent molar volume (

Quantitative and qualitative analysis of ionic solvation of individual ions of imidazolium based ionic liquids in significant solution systems by conductance and FT-IR spectroscopy

\phi_{\text{V}}^{0}

Conductance, a contrivance to explore ion association and solvation behavior of an ionic liquid (tetrabutylphosphonium tetrafluoroborate) in acetonitrile, tetrahydrofuran, 1,3-dioxolane, and their binaries.

ϕV0), viscosity B-coefficient and limiting apparent molar adiabatic compressibility (

Physics and chemistry of an ionic liquid in some industrially important solvent media probed by physicochemical techniques

\phi_{\text{K}}^{0}

Ionic solvation of tetrabutylammonium hexafluorophosphate in pure nitromethane, 1,3-dioxolane and nitrobenzene: A comparative physicochemical study

ϕK0). The changes on the enthalpy (