Electrochemical characterization of self-assembled Ferrocene-terminated alkanethiol monolayers on low-index gold single crystal electrodes

Rudnev, Alexander; Yoshida, Koji; Wandlowski, Thomas (2013). Electrochemical characterization of self-assembled Ferrocene-terminated alkanethiol monolayers on low-index gold single crystal electrodes. Electrochimica acta, 87, pp. 770-778. Elsevier Science 10.1016/j.electacta.2012.09.090

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We present a voltammetric and in situ STM study of 11-ferrocenyl-1-undecanethiol (FcC11) assembled on low-index single crystal and polycrystalline gold electrodes. The influence of electrode surface structure as well as of structure defects in the self-assembled FcC11 monolayers on the electrochemical response during the oxidation and reduction of the terminal ferrocene group is explored. The nature of the redox peaks is discussed in detail. We identified the coexistence of disordered FcC11 regions with 2D patches of “locally ordered” FcC11 species. We demonstrate that close-packed domains are preferentially formed at atomically flat terraces. Increasing the defect density of the substrate surface leads to a decreasing amount of locally ordered FcC11 molecules.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Rudnev, Alexander, Yoshida, Koji, Wandlowski, Thomas

Subjects:

500 Science > 540 Chemistry

ISSN:

0013-4686

Publisher:

Elsevier Science

Language:

English

Submitter:

Alexander Rudnev

Date Deposited:

16 Jan 2014 10:49

Last Modified:

05 Dec 2022 14:27

Publisher DOI:

10.1016/j.electacta.2012.09.090

Uncontrolled Keywords:

Gold single crystal, Self-assembled monolayer, Ferrocene, Alkanethiol, Cyclic voltammetry

BORIS DOI:

10.7892/boris.39816

URI:

https://boris.unibe.ch/id/eprint/39816

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