Self-assembled monolayers on Au microelectrodes

Marisa Sheffer, Vincent Vivier, Daniel Mandler*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Long chain alkanethiols self-assembled monolayers (SAMs) formed on Au microelectrodes showed higher sensitivity towards defects than the same monolayers on macroelectrodes. The analysis of cyclic voltammetry and electrochemical impedance spectroscopy (EIS) experiments performed on covered microelectrodes were consistent with the formation of pinholes of about 10 nm in diameter. Moreover, the EIS data exhibited a specific behavior that was interpreted invoking the short circuiting of the pinholes impedance by the surrounding surface of the microelectrode in the high frequency domain, whereas in the low frequencies, the surface covered by the SAM was assume to act as an insulator.

Original languageAmerican English
Pages (from-to)2827-2832
Number of pages6
JournalElectrochemistry Communications
Issue number12
StatePublished - Dec 2007

Bibliographical note

Funding Information:
This work is supported by the Israel Science Foundation (contract 200/02).


  • Electrochemical impedance spectroscopy
  • Microelectrode
  • Self-assembled monolayer


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