Ion Transfer at the Interface between Two Immiscible Electrolytes Formed by the Biphasic System Water-Propanol-Sucrose-PEG

Abstract

The study of ionic transference at the interface between two immiscible electrolytes (ITIES) has grown in interest in the last years, extending the type of interfaces formed by non-traditional immiscible electrolytes, like the ionic liquids, for example. In this work we present the development of a biphasic system which can be adopted for the development of novel interfaces for the ionic transfer. The composition of the two-phase system is based on water, sucrose, propanol and polyethylenglycol (PEG). The partition coefficients of lithium chloride, potassium thiocyanate, bis-(triphenylenphosphoran-ylidene) ammonium chloride and thiocyanate in the biphasic system were determined. From these measurements, lithium chloride and bis-(triphenylenphosphoran-ylidene) ammonium thiocyanate were selected as supporting electrolytes. An electrochemical window of 1000 mV was determined form cyclic voltammetry experiments.