Self-assembly of alkylthiosulfates on gold: Role of electrolyte and trace water in the solvent

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DOIResolve DOI: http://doi.org/10.1021/la200945e
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TypeArticle
Journal titleLangmuir
ISSN0743-7463
Volume27
Issue14
Pages90289033; # of pages: 6
SubjectAlkanethiols; Contact angle goniometry; Electron transfer; Monolayer formation; Open circuit potential measurements; Tetrabutylammonium; Tetrabutylammonium tetrafluoroborate; Contact angle; Electrolytes; Gold; Monolayers; Solvents; Self assembly
AbstractSpontaneous self-assembly of alkylthiosulfates on gold produce monolayers similar to the corresponding alkanethiols. Alkylthiosulfate self-assembly from THF solutions is inhibited in the presence of tetrabutylammonium tetrafluoroborate electrolyte. The mechanism of alkylthiosulfate self-assembly and the role of electrolyte and trace water in the solvent are investigated using open-circuit potential measurements, contact angle goniometry and redox electron transfer blocking experiments to explore the hypothesis that trace water present in the solvent facilitates monolayer formation on gold. Furthermore, the unique behavior of tetrabutylammonium tetrafluoroborate, compared to other tetrabutylammonium electrolytes, on the inhibition of alkylthiosulfate self-assembly has been explained. © 2011 American Chemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Institute for Nanotechnology
Peer reviewedYes
NPARC number21272021
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Record identifieracd9260b-2b49-4f4c-a2f9-3ee74e85017f
Record created2014-05-21
Record modified2016-05-09
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