On the self assembly of short chain alkanedithiols

Hicham Hamoudi, Zhiang Guo, Mirko Prato, Céline Dablemont, Wan Quan Zheng, Bernard Bourguignon, Maurizio Canepa, Vladimir A. Esaulov

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Abstract

A study of the self-assembly of nonane-alkanedithiol monolayers on gold in n-hexane and ethanol solvents is presented. Self-assembled monolayers (SAMs) are characterised by reflection-absorption infrared spectroscopy (RAIRS), sum frequency generation (SFG) and spectroscopic ellipsometry (SE) measurements. Data obtained for alkanethiols SAMs are also shown for comparison. The measurements show that nicely organized HSC9SH SAMs can be obtained in n-hexane provided that N2-degassed solutions are used and all preparation steps are performed in the absence of ambient light. SFG measurements show that these SAMs have free standing SH groups. Use of an un-degassed and/or light-exposed n-hexane solutions leads to a worse layer organization. Preparation in ethanol, even in degassed solutions with processing in the dark, leads to poorly organized layers and no sign of free -SH groups was observed.

Original languageEnglish
Pages (from-to)6836-6841
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume10
Issue number45
DOIs
Publication statusPublished - 2008
Externally publishedYes

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Hamoudi, H., Guo, Z., Prato, M., Dablemont, C., Zheng, W. Q., Bourguignon, B., Canepa, M., & Esaulov, V. A. (2008). On the self assembly of short chain alkanedithiols. Physical Chemistry Chemical Physics, 10(45), 6836-6841. https://doi.org/10.1039/b809760g