Synthesis and Characterization of Self-Assembled Monolayers of Alkylated 1-Thiahexa(ethylene oxide) Compounds on Gold

Self-assembled monolayers (SAMs) of a series of novel linear thiols containing a 1-thiahexa(ethylene oxide) (THEO) moiety, i.e., HS(CH2CH2O)6R, where R = C10H21, C10D21, C18H37, and C18D37, were prepared on polycrystalline gold (Au) and characterized by reflection absorption infrared spectroscopy (R...

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Veröffentlicht in:	Langmuir 1998-11, Vol.14 (24), p.6916-6923
Hauptverfasser:	Vanderah, David J, Meuse, Curtis W, Silin, Vitalii, Plant, Anne L
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Exact sciences and technology General and physical chemistry Solid-liquid interface Surface physical chemistry
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creator	Vanderah, David J Meuse, Curtis W Silin, Vitalii Plant, Anne L
description	Self-assembled monolayers (SAMs) of a series of novel linear thiols containing a 1-thiahexa(ethylene oxide) (THEO) moiety, i.e., HS(CH2CH2O)6R, where R = C10H21, C10D21, C18H37, and C18D37, were prepared on polycrystalline gold (Au) and characterized by reflection absorption infrared spectroscopy (RAIRS), spectroscopic ellipsometry, surface plasmon resonance (SPR), and contact angle measurements. The SAMs are hydrophobic with contact angles, θ a (H2O), of 108°−109° for all surfaces. For all compounds, our data provide evidence for well-ordered monolayers in which the THEO moiety is arranged in a 7/2 helix oriented normal to the substrate. The alkyl group conformation and tilt are similar to the corresponding n-alkanethiol SAMs.
doi_str_mv	10.1021/la9806451
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The SAMs are hydrophobic with contact angles, θ a (H2O), of 108°−109° for all surfaces. For all compounds, our data provide evidence for well-ordered monolayers in which the THEO moiety is arranged in a 7/2 helix oriented normal to the substrate. 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title	Synthesis and Characterization of Self-Assembled Monolayers of Alkylated 1-Thiahexa(ethylene oxide) Compounds on Gold
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