ABSTRACT
The interface of two immiscible liquids is important in a number of chemical processes and is also used as a model for biological systems. The physical mechanism of the elementary processes of charge transfer at the interface of two immiscible liquids has many common features with charge transfer in bulk liquids and the same physical ideas and methods are used for their description. The physical mechanism of ion transfer in a liquid depends on the properties of the ion and the liquid and on the temperature. The same method as derived for the calculation of electron and proton transfer may be used for the probability of tunnel hopping of the ion from one solvent cage to another. The potential barrier for the ion is formed by the solvent molecules, its value largely depends on the structure of the solvent and small fluctuations of the structure may lead to a considerable decrease of the potential barrier.
