Showing papers in "Journal of Molecular Liquids in 1998"

TL;DR: In this article, data from the optical Kerr effect, time-resolved Stokes shift, and dielectric dispersion experiments on 21 common room temperature solvents are collected and compared.

TL;DR: In this article, it was shown that precise complex permittivity spectra obtained by the use of time domain and frequency domain methods in the mega-to gigahertz range yield specific information on solvent dynamics as well as on ion-solvation and ion association phenomena not available so far.

TL;DR: In this article, the authors studied the Stokes shift of 4-aminophthalimide (4-AP) in neutral (triton X-100, TX), cationic (cetyl trimethyl ammonium bromide, CTAB) and anionic (sodium dodecyl sulfate, SDS) micelles using picosecond time resolved Stokes shifts above critical micellar concentration (CMC).

TL;DR: In this paper, the authors used an open-ended capillary method and a conductimetric technique to follow the diffusion process by measuring the resistance of a solution inside the capillaries, at recorded times.

TL;DR: In this article, the structures of subcritical and supercritical water, methanol, and aqueous lithium chloride solutions have been determined on an atomic scale by rapid solution X-ray diffraction with a two-dimensional imaging plate detector and neutron diffraction using isotopic substitution techniques.

TL;DR: In this article, the complex dielectric permittivity of aqueous electrolyte solutions in a wide range of concentrations was comprehensively studied between 7 and 120 GHz, and experimental data were described in terms of the Debye or Cole-Cole relaxation models.

TL;DR: In this paper, a review of studies of interparticle interactions and picosecond dynamics in molten salts using this approach are reviewed. Similarities and differences between molecular and ionic liquids which manifest themselves in spectroscopic experiments are compared.

TL;DR: In this paper, the effect of microstructure on the viscosity of rheologically complex magnetic particle suspensions is investigated, and the empirical formulas from mean field theory and the Mooney equation, which are applicable for high concentrations of magnetic particles, are used to relate viscosities to particle concentration.

TL;DR: In this paper, a generalized quasichemical association model for a set of thermodynamic, dielectric and optical properties of liquids and mixtures, selforganized by specific bonding, is presented.

TL;DR: In this article, the authors reviewed the recent progress in the characterization of aqueous surfactant systems using molecular dynamics simulations and provided insights into the structure and dynamical behavior of three systems.

TL;DR: The isomorphic substitution applied to solutions of NH4PtCl4 and NH4pdCl4 allows to show the existence of 2 bound water molecules at the apical sites of PtCl42− and PdCl42+ ions as mentioned in this paper.

TL;DR: In this article, it was shown that the coefficients to this series should provide the essential database for the structure of a molecular liquid as derived from a given set of diffraction data.

TL;DR: In this article, the authors measured the density, ultrasonic velocity and viscosity of four pharmaceutically significant drugs in methanol at 25°C and calculated the apparent molar volume (∅ v ), evident molar compressibility (∆ K ) and the visco-coefficient (B-Coefficient) from the experimental data.

TL;DR: In this paper, the density of aqueous solutions of 18-crown-6 in the concentration range of 0.1 m to 4.5 m at 25 C was measured.

TL;DR: In this article, the influence of solvent-averaged short range interactions between ions on the association constant is discussed, and a parameter-free theory is derived for ion pairs made up by ions of different diameters.

TL;DR: In this article, the structure and dynamics of water confined in pores of porous glass and at surface of a soluble globular protein are compared with that of bulk water in terms of some increase of the extension of the H-bond network.

TL;DR: In this paper, the rotational anisotropy ( τ + D / τ + 170 ) of water molecules can be used as a new indicator to classify three types of hydration; negative, positive, and hydrophobic hydrations.

TL;DR: Experimental and computer simulation studies of the rotational relaxation of organic solutes in polar organic solvents and electrolyte solutions are used to investigate the role of solute-solvent dielectric friction as mentioned in this paper.

TL;DR: In this paper, a vertical oscillation rheometer (VOR) was designed for the purpose of electrorheological (ER) fluid measurements, which is used to measure the viscoelastic properties of the ER fluid with a high electric voltage generator.

TL;DR: In this paper, the authors summarize the current understanding of orientational correlations in liquid water and aqueous solutions near interfaces, as obtained from computer simulation studies and present a number of examples in which they discuss the magnitude and the range of orientation anisotropy and its dependence on the nature of the interface (non-polar, polar, or metallic) and the geometry of the interfaces (planar or curved).

TL;DR: In this paper, a simulation of Li+-Cl− ion pair dissolved in liquid NN dimethylformamide (DMF-d7) has been performed in order to study the mobility and the solvation structure of these ions in the solution at room temperature.

TL;DR: In this paper, a Redlich-Kister-type equation was fitted to the binary η-X-T data for each system and the non-idealities reflected in mixture viscosities were expressed in terms of excess viscosity.

TL;DR: In this article, the authors measured the density, viscosity and ultrasonic velocity for binary mixtures of dimethyl sulfoxide with methanol, ethanol, propan-l-ol and butan l-ol over the entire range of mole fractions at a constant temperature of 308.15 K. Excess molar volume (VE), deviation in viscosities ( Δη ) and deviation in isentropic compressibility ( ΔKs) were calculated and related to intermolecular interactions.

TL;DR: In this article, the behavior of a monolayer, which occupies initially a bounded region on an ideal crystalline surface and then evolves in time due to random hopping of the monolayers particles, is studied.

TL;DR: In this article, the effect of dipolar interactions on the phase behavior of hard spherocylinders with dipoles in a number of positions and orientations was examined using computer simulation techniques.

TL;DR: In this paper, the Fuoss-Hirsch equation was used to analyze the individual limiting ionic conductivity of triisoamylbutylammonium iodide, i-Am 3 BuNI (TABI), and sodium tetraphenylboride (NaBPh 4 ) in the water+N,N-dimethylformamide (DMF) in the whole range of the mixed solvent composition at 298.15 K.

TL;DR: In this paper, the authors analyzed the hydration of poly(oxyethylene) CH3OCH2CH2OCH3 (C1E1C1) in the range of concentrations up to 0.25 mole fraction (m.f.).

TL;DR: In this paper, the influence of counterion size on the viscosity behavior of 0.3M micellar solutions at 30°C was studied and the results were interpreted in the light of adsorption/intercalation of the counterions or their electrostrictive/hydrophobic nature.

TL;DR: In this article, a two-dimensional model for a chemically associating fluid adsorbed in a disordered porous media has been investigated by means of the associative Replica Ornstein-Zernike equations, with Perens-Yevick and hypernetted chain approximations, extended for associating fluids.