Dissolution kinetics of octadecanethiolate monolayers electro-adsorbed on Au(111)

Doneux, Thomas; Nichols, Richard J.; Buess‐Herman, C.

doi:10.1016/j.jelechem.2008.01.008

Cited by 21 publications

(23 citation statements)

References 75 publications

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“…The shape of the current-time transients corresponding to the reductive desorption in aqueous alkaline solutions is consistent with a nucleation and growth process of "holes" inside the thiol adsorbed layer [19][20][21]. This process should involve different contributions such as the thiol adsorption energy, which contains both the RS-Me bond strength and van der Waals interactions (vdW), and the hydration energies of the desorbed RS species and of the metal surface [22].…”

Section: A C C E P T E Dsupporting

confidence: 59%

The electrochemical stability of thiols on gold surfaces

Salvarezza

Carro

2018

Journal of Electroanalytical Chemistry

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In this paper we present a comparative analysis of the electrochemical stability of alkanethiols, aromatic and heterocyclic thiols on the Au(111) and Au(100) faces in relation to the theoretical energetic data. The peak potential and surface coverage are used as the key parameters to estimate the electrochemical stability while work function changes, adsorption energies and surface free energies calculated from periodic DFT, including van der Waals interactions, are used for the theoretical estimation. We find that the peak potentials do not correlate with work function changes and adsorption energies in particular for aromatic and heterocyclic thiols. In contrast, the reductive desorption potentials for the different thiols show a good correlation with the surface free energy of the SAMs estimated by density functional theory calculations. Surface coverage is a key factor that controls reductive desorption through van der Waals interactions.

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Section: A C C E P T E Dsupporting

confidence: 59%

The electrochemical stability of thiols on gold surfaces

Salvarezza

Carro

2018

Journal of Electroanalytical Chemistry

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“…Upon continuous potential cycling, the amount of adsorbed NQ4 did not decrease further and it was not possible to completely remove the monolayer by reductive desorption. This good stability is probably due to the very low solubility of the reduction product, which prevents its diffusion in the bulk of the solution [49][50][51]. Hydrophobic interactions between adjacent naphthoquinones moieties in the monolayer could also contribute to the stability of the SAM.…”

Section: Behaviour Of the Self-assembled Monolayermentioning

confidence: 99%

Electrochemical investigations of dissolved and surface immobilised 2-amino-1,4-naphthoquinones in aqueous solutions

Bouffier

Lister

Higgins

et al. 2012

Journal of Electroanalytical Chemistry

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“…In the actual experiments, the pzc for a given crystallographic orientation is not known accurately, because the presence of hydroxide anions in solution as well as the presence of the monolayer at the surface probably affects its value significantly. Moreover, the RD peak potential is often affected by the kinetics of the desorption process [47]. …”

Section: Sams Of 2-mercaptobenzimidazole-5-sulphonatementioning

confidence: 99%