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Abstract <p>The influence of the adsorption of monohydric alcohols with different hydrocarbon radical lengths (C2–C4) and with isomerism of the OH<sup>–</sup> group position in the alcohol molecule (C3) on the electrochemical behavior of self-assembled monolayers (SAMs) of dodecanethiol (DDT) on the surface of mechanically renewable Au and Co electrodes was studied using voltammetry and potentiostatic chronoamperometry. An increase in the strength of alcohol binding to the Au surface in the ethanol–propanol–butanol series and to Co in the propanol–ethanol–butanol series was observed, which affected the adsorption of dodecanethiol and the properties of SAMs. It was shown that the OH<sup>–</sup> group position affects the alcohol’s adsorption activity (using 1-propanol/2-propanol as an example) on the surface of Au and Co, while the stronger adsorption of 1-propanol to a greater extent prevents the adsorption of DDT and the formation of a dense SAMs film.</p>

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Influence of Monohydric Alcohols on the Formation of Self-Assemled Dodecanethiol Nanofilms from Aqueous Solutions on the Surface of Metal Electrodes

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • S. N. Ovchinnikova,
  • T. P. Aleksandrova

摘要

Abstract

The influence of the adsorption of monohydric alcohols with different hydrocarbon radical lengths (C2–C4) and with isomerism of the OH– group position in the alcohol molecule (C3) on the electrochemical behavior of self-assembled monolayers (SAMs) of dodecanethiol (DDT) on the surface of mechanically renewable Au and Co electrodes was studied using voltammetry and potentiostatic chronoamperometry. An increase in the strength of alcohol binding to the Au surface in the ethanol–propanol–butanol series and to Co in the propanol–ethanol–butanol series was observed, which affected the adsorption of dodecanethiol and the properties of SAMs. It was shown that the OH– group position affects the alcohol’s adsorption activity (using 1-propanol/2-propanol as an example) on the surface of Au and Co, while the stronger adsorption of 1-propanol to a greater extent prevents the adsorption of DDT and the formation of a dense SAMs film.