Chaibi, SarahZabat, MokhtarHadjersi, ToufikAbaidia, Seddik-El-HakZine, NadiaYaakoubi, NourdinErrachid, Abelhamid2021-09-162021-09-162021001116431334-417X Electronichttps://dspace.univ-boumerdes.dz/handle/123456789/7109https://hrcak.srce.hr/261179DOI 10.5562/CCA3731A theoretical investigation aimed at estimating a characteristic frequency in the medium-low frequency domain in which the impedance response of a given interface measured by electrochemical impedance spectroscopy (EIS) is almost constant, constitutes the basic idea of this work. A theoretical model was subsequently applied to the data resulting from EIS measurements performed on gold electrodes modified by various ways of 16-mercaptohexadecanoic acid (MHDA) thiol functionalization. Analysis of these data revealed a direct relationship between the way the substrate was modified and this characteristic frequencyenEISMHDAFunctionalizationConductivityDielectric frequencyArticle