Kinetics of desorption of alkanethiolates on gold

Self-assembled monolayers (SAMs) of alkanethiols can undergo reductive desorption and oxidative re-adsorption. The Coulombic efficiency of the oxidative re-adsorption reaction is dependent on the chain length and solution pH. We show that the loss of alkanethiols from the surface after reductive des...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 22(2006), 8 vom: 11. Apr., Seite 3474-6
1. Verfasser: Pesika, Noshir S (VerfasserIn)
Weitere Verfasser: Stebe, Kathleen J, Searson, Peter C
Format: Aufsatz
Sprache:English
Veröffentlicht: 2006
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Self-assembled monolayers (SAMs) of alkanethiols can undergo reductive desorption and oxidative re-adsorption. The Coulombic efficiency of the oxidative re-adsorption reaction is dependent on the chain length and solution pH. We show that the loss of alkanethiols from the surface after reductive desorption can be explained by a simple model that takes into account diffusion of the thiolate into the bulk solution at a rate that is determined by the bulk solubility. These results provide a quantitative basis for the determination of the loss of alkanethiols from the surface after reductive desorption 
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