Coverage-dependent formation of chiral ethylthiolate-Au complexes on Au(111)

We studied the coverage-dependent self-assembly of the flat-lying phase of ethylthiolate on Au(111). At low coverage, we observed the formation of short stripes of chiral Au-(SC(2)H(5))(2) complexes that arrange in a disordered phase. The latter grow partly at the expense of the native Au(111) surfa...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 27(2011), 2 vom: 18. Jan., Seite 627-9
1. Verfasser: Clair, Sylvain (VerfasserIn)
Weitere Verfasser: Kim, Yousoo, Kawai, Maki
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Organometallic Compounds Sulfhydryl Compounds Gold 7440-57-5
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520 |a We studied the coverage-dependent self-assembly of the flat-lying phase of ethylthiolate on Au(111). At low coverage, we observed the formation of short stripes of chiral Au-(SC(2)H(5))(2) complexes that arrange in a disordered phase. The latter grow partly at the expense of the native Au(111) surface reconstruction, which is fully lifted for a coverage of ∼0.60 ML. We found that the lift of the reconstruction and evaporation from step edges are competing adatom sources. Close to saturation coverage (0.70 to 0.75 ML), large, well-ordered domains with a (8 × √3)rectangular superstructure formed. Alternation of chirality was found in adjacent stripes as already reported for other short alkanethiolates. We suggest that, because of a simple geometrical consideration, the chirality should, on the contrary, be preserved in the stripe phase of longer alkanethiolates 
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700 1 |a Kawai, Maki  |e verfasserin  |4 aut 
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