Mixed self-assembled monolayers of rigid biphenyl thiols

Impact of solvent and dipole moment

Jung F. Kang, Sheng Liao, Rainer Jordan, Abraham Ulman

Research output: Contribution to journalArticle

Abstract

The formation of mixed self-assembled monolayers (SAMs) of different 4'- substituted-4-mercaptobiphenyl (with X = CH 3, CF 3, and SCH 3) on gold, from different solvents, has been investigated. Monolayer thickness values, estimated by ellipsometry, contact angle measurements, and external reflection absorption infrared (ERFTIR) spectroscopy confirms that > 90% of the monolayer is formed after 1 h of adsorption. The dielectric constant of the solvent, the permanent dipole moment of the substituted mercaptobiphenyl, their adsorption and desorption kinetics, and their intermolecular dipole- dipole interactions in the SAM were all found to play a crucial role in the final composition of the mixed SAMs.

Original languageEnglish (US)
Pages (from-to)9662-9667
Number of pages6
JournalJournal of the American Chemical Society
Volume120
Issue number37
DOIs
StatePublished - Sep 23 1998

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Dipole moment
Self assembled monolayers
Sulfhydryl Compounds
Adsorption
Monolayers
Gold
Spectrum Analysis
Ellipsometry
Angle measurement
Absorption spectroscopy
Contact angle
Infrared spectroscopy
Desorption
Permittivity
Kinetics
Chemical analysis
diphenyl

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Mixed self-assembled monolayers of rigid biphenyl thiols : Impact of solvent and dipole moment. / Kang, Jung F.; Liao, Sheng; Jordan, Rainer; Ulman, Abraham.

In: Journal of the American Chemical Society, Vol. 120, No. 37, 23.09.1998, p. 9662-9667.

Research output: Contribution to journalArticle

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