Abstract
Electrochemically driven ion transfer reactions of ClO 4 - , NO 3 - , SCN −, and K + across a cholesterol modified water–nitrobenzene (W–NB) interface have been studied by means of square-wave and cyclic voltammetry at thin organic film modified electrodes. It has been found that cholesterol exhibits a profound accelerating effect toward the kinetics of ClO 4 - , NO 3 - , SCN − transfers, whereas a retarding kinetic effect was observed for K +. Besides, the cholesterol layer alters significantly the mechanism of ion transfer, prompting adsorption of all studied ions as a consequence of specific interactions between cholesterol molecules and the transferring ion.
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