Covalently attached organic monolayers onto silicon carbide from 1-alkynes : molecular structure and tribological properties

In order to achieve improved tribological and wear properties at semiconductor interfaces, we have investigated the thermal grafting of both alkylated and fluorine-containing ((C(x)F(2x+1))-(CH2)n-) 1-alkynes and 1-alkenes onto silicon carbide (SiC). The resulting monolayers display static water con...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 29(2013), 12 vom: 26. März, Seite 4019-31
1. Verfasser: Pujari, Sidharam P (VerfasserIn)
Weitere Verfasser: Scheres, Luc, Weidner, Tobias, Baio, Joe E, Stuart, Martien A Cohen, van Rijn, Cees J M, Zuilhof, Han
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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245 1 0 |a Covalently attached organic monolayers onto silicon carbide from 1-alkynes  |b molecular structure and tribological properties 
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520 |a In order to achieve improved tribological and wear properties at semiconductor interfaces, we have investigated the thermal grafting of both alkylated and fluorine-containing ((C(x)F(2x+1))-(CH2)n-) 1-alkynes and 1-alkenes onto silicon carbide (SiC). The resulting monolayers display static water contact angles up to 120°. The chemical composition of the covalently bound monolayers was studied by X-ray photoelectron spectroscopy (XPS), infrared reflection-absorption spectroscopy (IRRAS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. These techniques indicate the presence of acetal groups at the organic-inorganic interface of alkyne-modified SiC surfaces. The tribological properties of the resulting organic monolayers with fluorinated or nonfluorinated end groups were explored using atomic force microscopy (AFM). It was found that the fluorinated monolayers exhibit a significant reduction of adhesion forces, friction forces, and wear resistance compared with non-fluorinated molecular coatings and especially bare SiC substrates. The successful combination of hydrophobicity and excellent tribological properties makes these strongly bound, fluorinated monolayers promising candidates for application as a thin film coating in high-performance microelectronic devices 
650 4 |a Journal Article 
700 1 |a Scheres, Luc  |e verfasserin  |4 aut 
700 1 |a Weidner, Tobias  |e verfasserin  |4 aut 
700 1 |a Baio, Joe E  |e verfasserin  |4 aut 
700 1 |a Stuart, Martien A Cohen  |e verfasserin  |4 aut 
700 1 |a van Rijn, Cees J M  |e verfasserin  |4 aut 
700 1 |a Zuilhof, Han  |e verfasserin  |4 aut 
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