Self-assembly of 1,4-benzenedimethanethiol self-assembled monolayers on gold

Hicham Hamoudi, Mirko Prato, Céline Dablemont, Ornella Cavalleri, Maurizio Canepa, Vladimir A. Esaulov

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

A study of the self-assembly of 1,4-benzenedimethanethiol (BDMT; HS-CH 2-(C6H4)-CH2-SH) monolayers on gold is presented. Self-assembled monolayers (SAMs) are characterized by reflection-absorption infrared spectroscopy (RAIRS), X-ray photoelectron spectroscopy (XPS), and spectroscopic ellipsometry (SE) measurements. The ensemble of measurements consistently shows that well-organized BDMT SAMs, with "standing-up" molecules, can be obtained on high quality gold films with incubation in n-hexane provided that N2-degassed solutions are used and all preparation steps are performed at 60 °C in the absence of ambient light. SE data indicate that the optical interface properties of the BDMT-Au system are different from those of simple alkanethiol SAMs. A possible mechanism for the formation of the "standing-up" phase from the lying-down phase via a hydrogen exchange reaction involving chemisorbed lying-down and free dithiol molecules is discussed.

Original languageEnglish
Pages (from-to)7242-7247
Number of pages6
JournalLangmuir
Volume26
Issue number10
DOIs
Publication statusPublished - 18 May 2010
Externally publishedYes

Fingerprint

Self assembled monolayers
Gold
Self assembly
ellipsometry
self assembly
Spectroscopic ellipsometry
gold
Photoelectron Spectroscopy
thiols
molecules
Hydrogen
Spectrum Analysis
absorption spectroscopy
Molecules
infrared spectroscopy
photoelectron spectroscopy
methylidyne
Hexane
Absorption spectroscopy
Light

ASJC Scopus subject areas

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

Cite this

Hamoudi, H., Prato, M., Dablemont, C., Cavalleri, O., Canepa, M., & Esaulov, V. A. (2010). Self-assembly of 1,4-benzenedimethanethiol self-assembled monolayers on gold. Langmuir, 26(10), 7242-7247. https://doi.org/10.1021/la904317b

Self-assembly of 1,4-benzenedimethanethiol self-assembled monolayers on gold. / Hamoudi, Hicham; Prato, Mirko; Dablemont, Céline; Cavalleri, Ornella; Canepa, Maurizio; Esaulov, Vladimir A.

In: Langmuir, Vol. 26, No. 10, 18.05.2010, p. 7242-7247.

Research output: Contribution to journalArticle

Hamoudi, H, Prato, M, Dablemont, C, Cavalleri, O, Canepa, M & Esaulov, VA 2010, 'Self-assembly of 1,4-benzenedimethanethiol self-assembled monolayers on gold', Langmuir, vol. 26, no. 10, pp. 7242-7247. https://doi.org/10.1021/la904317b
Hamoudi H, Prato M, Dablemont C, Cavalleri O, Canepa M, Esaulov VA. Self-assembly of 1,4-benzenedimethanethiol self-assembled monolayers on gold. Langmuir. 2010 May 18;26(10):7242-7247. https://doi.org/10.1021/la904317b
Hamoudi, Hicham ; Prato, Mirko ; Dablemont, Céline ; Cavalleri, Ornella ; Canepa, Maurizio ; Esaulov, Vladimir A. / Self-assembly of 1,4-benzenedimethanethiol self-assembled monolayers on gold. In: Langmuir. 2010 ; Vol. 26, No. 10. pp. 7242-7247.
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