Thiol self-assembled monolayers on mercury surfaces: The adsorption and electrochemistry of ω-mercaptoalkanoic acids

Nechama Muskal, Daniel Mandler

Research output: Contribution to journalConference articlepeer-review

44 Scopus citations

Abstract

The formation of self-assembled monolayers (SAMs) of ω-mercaptoalkanoic acids on a mercury surface under potential control has been studied. Cyclic voltammetry and AC voltammetry were used for investigating the different phases and transitions that the homologous series of these thiols form and undergo. We find that the thiols are either physisorbed or chemisorbed depending on the applied potential and the transition between these two states occurs through a Faradaic process. Moreover, the chemisorption of the thiols results in multilayer deposition when the thiol monolayer does not block electron transfer. Finally, the implications of this study to the formation and manipulation of SAMs of ω-functionalized alkanethiols on Hg are discussed.

Original languageAmerican English
Pages (from-to)537-548
Number of pages12
JournalElectrochimica Acta
Volume45
Issue number4-5
DOIs
StatePublished - 1 Nov 1999
EventProceedings of the 1998 Portucalensis Conference on Electrified Interfaces - Povoa de Varzim, Portugal
Duration: 5 Jul 199810 Jul 1998

Bibliographical note

Funding Information:
T. Wandlowski is warmly acknowledged for stimulating discussions. The assistance of I. Turyan in preparing this manuscript is also appreciated. This study was supported by the Foundation of Basic Research administrated by the Israel Academy of Sciences and Humanities.

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