Study to Explore Diverse Interactions by Physicochemical Contrivance of an Ionic Liquid in Aqueous Oligosaccharides

Abstract

In this article interaction properties of an IL, 1-butyl-1-methylpyrrolidinium chloride ([bmp]Cl) have been studied in different concentrations of aqueous D(-)fructose and D(+)galactose solutions at diverse temperatures. In spite of having green solvent property toxicity of ILs has been revealed. So the interface of ILs with biomolecules (such as carbohydrates) is a progressive research topic. The limiting molal conductivities, association constants of the ion have been evaluated. From density measurement the limiting apparent molal volumes, experimental slopes and the limiting partial molal transfer volumes are derived. Viscosity measurement helps to determine viscosity -B coefficients and dB/dT. The association constant has been used to study the thermodynamic functions of association process. Consequently, Gibbs free energy, enthalpy and entropy of ion-pair formation have been determined. In addition, the 1H NMR spectra of carbohydrates, IL and carbohydrate + IL + D 2 O were studied. The NMR study does not show any special and strong interactions between IL and carbohydrates but, the macro properties and their changes in terms of size and structure of carbohydrates and IL have been discussed. By means of the interaction between IL and biomolecules, the potential toxicity of ILs may originate.