Density Analysis on Self-Assembled Monolayers (SAMs) of Functionalized Alkanethiol on Gold over Polyethylene Terephthalate (PET) Substrate

In this work, an equivalent circuit from electrochemical impedance spectroscopy (EIS) has been designed and executed for qualitative analyzing of leaky behavior of self‐assembled monolayers (SAMs) of octadecanethiol [CH3(CH2)17‐SH] on gold (Au) suface. Polyethylene terephthalate (PET), the cost‐effective substrate has been utilized for metalization of thin Au layer with subsequent formation of octadecanethiol SAM on it with systematic variation of adsorption time. The SAM layer shows its highly dependency on the adsorption time of the surfactants of octadecanethiol with the metal surface.