Electrochemical Investigation of P-Tert-Butylcalix[6]Arene Modified Gold Electrode for Ionic Detection

Abstract

The aim of this work was to study the electrochemical behavior of gold electrode which was mod- ified with p-tert-butylcalix[6]arene membrane and this in the presence of different nickel ions based concentrations in order to form a nickel electrochemical sensor. For that, impedance-spec- troscopy characteristics have been investigated. The obtained results were then modeled by ap- propriate equivalent circuit aiming at elucidating the electrical properties of the modified gold transducer. A correlation between the present impedimetric results and previous potentiometric ones was achieved traducing then a fast ionic transfer.