Multi-Nuclear Relaxation Time Studies in Undercooled Aqueous Electrolytes

Yousuf Et Al: Volumetric and Viscometric Studies on Electrolytes in Non-aqueous Solvent

The densities, ρ and viscosities, η of NH4Cl, NiCl2 and FeCl3 in dimethylsulfoxide were studied as a function of concentration. The partial molal volume, ( 0 v φ ) of these electrolytes were evaluated. The viscosity and viscosity-coefficients (A and B) were also determined by Jones-Dole equation. B-coefficient for NiCl2 and FeCl3 are positive that show structure making behavior in all the solut...

Aqueous electrolytes confined within functionalized silica nanopores.

Molecular dynamics simulations have been carried out to investigate structural and dynamical characteristics of NaCl aqueous solutions confined within silica nanopores in contact with a "bulk-like" reservoir. Two types of pores, with diameters intermediate between 20 Å and 37.5 Å, were investigated: The first one corresponded to hydrophobic cavities, in which the prevailing wall-solution intera...

Studies of Biomolecules and Their Complexes by Nuclear Magnetic Relaxation

Nuclear magnetic resonance studies of supercooled aqueous electrolyte solutions

The dynamic properties of water molecules coordinated to simple ions (alkali and alkali-earth halides) and hydrophobic ions (tetraalkylammonium (TAA) halides) in supercooled solutions have been investigated with KMR. The study of spin-lattice relaxation rates and self-diffusion coefficients as functions of temperature, pressure, Larmor frequency and concentration reveals characteristic features...

Polarization effects of dielectric nanoparticles in aqueous charge-asymmetric electrolytes.

Small nanoparticles, globular proteins, viral capsids, and other nanoscopic biomolecules usually display dielectric properties that are different from those of the medium in which they are dispersed. These dielectric heterogeneities can significantly influence the surrounding ion distribution, which determines the self-assembly and colloidal stability of these nanoparticles in solution. Here, w...