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Impact of gold-1-decanethiol-SAM formation and removal cycles on the surface properties of polycrystalline gold and SAM quality

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Abstract

The impact of 1-decanethiol self-assembled monolayer (SAM) formation and removal cycles on polycrystalline Au surfaces and SAM quality was studied with the help of CV, DPV, Pb-UPD, STM, and AFM. The SAM removal was accomplished by dissolution with oxygen radicals generated by UV photolysis of aqueous hydrogen peroxide. During the first Au-SAM formation and removal cycles, the surface roughness decreased. After that, the surface properties remained almost unaffected, indicating that the cyclic treatment removed the most reactive gold surface sites, until a rather stable surface resulted, which guaranteed highly reproducible SAM formation.

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Funding

The work was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) as part of the research training group (RTG) 1947.

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Authors and Affiliations

  1. Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17489, Greifswald, Germany

    Dana Thal, Heike Kahlert, Jeyabharathi Chinnaya, Paula Ahrens & Ulrich Hasse

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  1. Dana Thal
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  2. Heike Kahlert
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  3. Jeyabharathi Chinnaya
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  4. Paula Ahrens
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  5. Ulrich Hasse
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Correspondence to Dana Thal.

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Thal, D., Kahlert, H., Chinnaya, J. et al. Impact of gold-1-decanethiol-SAM formation and removal cycles on the surface properties of polycrystalline gold and SAM quality. J Solid State Electrochem 22, 1149–1154 (2018). https://doi.org/10.1007/s10008-017-3858-y

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  • DOI: https://doi.org/10.1007/s10008-017-3858-y

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