Octadecyl mercaptan sub-monolayers on silver electrodeposited on gold quartz crystal microbalance electrodes

James Burgess, Fred M. Hawkridge

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The objective of this work is to accurately and reproducibly control the amount of alkanethiol self-assembled onto the surface of a gold quartz crystal microbalance (QCM) electrode. This reaction is the first step in preparing bilayer membranes on gold electrodes that contain cytochrome c oxidase. In this work procedures for cleaning the surface of gold QCM electrodes, including use of an oxygen plasma, a UV surface cleaner, and aggressive chemical treatment of the surface, still led to rates of octadecyl mercaptan (OM) self-assembly that were highly irreproducible, varying over several orders of magnitude in time. Electrodeposition of a silver monolayer onto the surface of gold QCM electrodes affords a surface at which the OM self-assembly reaction can be easily controlled. Using the QCM to monitor the self-assembly reaction of OM on the silver-coated gold QCM electrode surface, a selected sub-monolayer coverage can be reliably prepared in about 10 min.

Original languageEnglish (US)
Pages (from-to)3781-3786
Number of pages6
JournalLangmuir
Volume13
Issue number14
StatePublished - Jul 9 1997
Externally publishedYes

Fingerprint

Quartz crystal microbalances
quartz crystals
Silver
Sulfhydryl Compounds
thiols
Gold
microbalances
Monolayers
silver
gold
Electrodes
electrodes
Self assembly
self assembly
cleaners
oxidase
cytochromes
oxygen plasma
Electron Transport Complex IV
Electrodeposition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Octadecyl mercaptan sub-monolayers on silver electrodeposited on gold quartz crystal microbalance electrodes. / Burgess, James; Hawkridge, Fred M.

In: Langmuir, Vol. 13, No. 14, 09.07.1997, p. 3781-3786.

Research output: Contribution to journalArticle

Burgess, James ; Hawkridge, Fred M. / Octadecyl mercaptan sub-monolayers on silver electrodeposited on gold quartz crystal microbalance electrodes. In: Langmuir. 1997 ; Vol. 13, No. 14. pp. 3781-3786.
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