Electrochemical stability of self-assembled monolayers on gold


Beulen, Marcel W.J. and Kastenberg, Miryam I. and Veggel, Frank C.J.M. van and Reinhoudt, David N. (1998) Electrochemical stability of self-assembled monolayers on gold. Langmuir, 14 (26). pp. 7463-7467. ISSN 0743-7463

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Abstract:Most applications of functionalized self-assembled monolayers (SAMs) are based on changes in electrochemical properties. Such applications require electrochemical stability. This study reveals that there is only a limited potential window from -0.8 to +0.4 VMSE where self-assembled monolayers of sulfur-containing adsorbates (thiols and alkyl sulfides) on gold are electrochemically stable. A sensitive parameter describes the quality/stability of the monolayers (viz. the charge-transfer resistance). The substitution pattern of the adsorbates influences the window. Highly ordered monolayers, like that of tetrasulfide-based cavitand (10), are more resistant to extreme potentials. The stability window from -0.9 to +0.5 VMSE for this sulfide-based monolayer is comparable to that for a decanethiol monolayer
Item Type:Article
Copyright:© 1998 American Chemical Society
Science and Technology (TNW)
Link to this item:http://purl.utwente.nl/publications/11046
Official URL:https://doi.org/10.1021/la981031z
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