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 language||American English|
|Number of pages||12|
|State||Published - 1 Nov 1999|
|Event||Proceedings of the 1998 Portucalensis Conference on Electrified Interfaces - Povoa de Varzim, Portugal|
Duration: 5 Jul 1998 → 10 Jul 1998
Bibliographical noteFunding 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.