Characterization and electroanalytical application of ω-mercaptoalkanesulfonic acid monolayers on gold

Iva Turyan, Daniel Mandler*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Self-assembled monolayers (SAMs) of ω-mercaptoalkanesulfonic acid on gold surfaces have been studied by electrochemistry and other surface techniques. In spite of the fact that these monolayers are disorganized, i.e., of "brush" type, they are impermeable to inorganic anions due to their high negative charge. Moreover, we find that an ω-mercaptodecanesulfonic acid (MDS) monolayer is also impermeable to organic species, regardless of their charge, because of its high hydrophilicity. The combination of these properties made it possible to apply gold electrodes modified with MDS for the determination of iron(III) ions in the presence of organic species that are either electroactive throughout the same potential window or form strong complexes with iron(III).

Original languageAmerican English
Pages (from-to)225-233
Number of pages9
JournalIsrael Journal of Chemistry
Volume37
Issue number2-3
DOIs
StatePublished - 1997

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