The lithium ion-ion interactions in protic ionic liquids can be very different compared to those in aprotic ionic liquids. In this study we show that, for equal lithium ion concentration, the lithium coordination number in protic ionic liquids is lower than that in aprotic ones. This lower coordination makes lithium ions more "free" to move in protic ionic liquids and it might have an important...

Interfacial charge transport and mobility have been studied in system-spanning nanodroplet clusters formed in water-in-oil microemulsions stabilized by non-ionic-ionic surfactant mixtures. An unexpectedly large reduction in the counterion mobility was derived from a two-step adsorption process which described the Langmuir-plot-like conductivity isotherm remarkably well. It also conformed very s...

Migration times or apparent mobilities can never be used for the identification of ionic species in capillary zone electrophoresis if an electroosmotic flow (EOF) is present, because the velocity of this flow varies considerably with the “state” of the capillary. From the migration times of the EOF and the ionic species, the effective mobilities can be calculated. These effective mobilities are...

Using a combination of dielectric spectroscopy and atomistic computer simulation techniques, the dynamical behaviour of loosely bound cations in the stuffed-silica minerals nepheline, yoshiokaite and ß-eucryptite has been investigated. The investigation has been extended to include the feldspar minerals albite, K-feldspar and anorthite. The low-frequency dielectric properties of all of the mine...

Studying biological systems to determine structure has been performed by a number of analytical techniques, including electrospray ionization (ESI)/ion mobility spectrometry (IMS) with mass spectrometry (MS) detection. ESI/IMS/MS enables the determination of gas phase ionic molecular size and can be correlated to computational modeling for structural evaluation. In this study, a molecular model...

1. The electrophoretic mobility of unhemolyzed human red cells has been determined as a function of ionic strength at approximately constant pH in isotonic mixtures of glucose solution and saline-phosphate buffer solution. 2. Above an ionic strength of about 0.02 the cells behave as particles with a smooth surface of large radius of curvature. Below an ionic strength of about 0.02, changes of t...

1. Methods for the separation from guinea pig serum in highly purified form of three of the components of complement are described. These substances are the so called mid-piece, end-piece, and 4th component. 2. Mid-piece has been separated as a euglobulin, with an electrophoretic mobility of 2.9 x 10(-5) in phosphate buffer of ionic strength 0.2 at pH 7.7, and with a sedimentation constant of 6...

Temperature-dependent switching of paramagnetism of a cobalt(II) complex is observed in an ionic liquid solution. Paramagnetic and thermochromic switching occur simultaneously due to a reversible change in coordination. This reversible switching is possible in the ionic liquid solution, which enables mobility of thiocyanate anions by remaining mobile at low temperatures and acts as an anion res...