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Hexagons to ribbons: flipping cyanide on Au{111}

Cyanide monolayers on Au{111} restructure from a hexagonal close-packed lattice to a mixed-orientation “ribbon” structure through thermal annealing. The new surface structure loses most of the observed surface features characterizing the initial as-adsorbed system with “ribbon” domain boundaries iso...

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Hauptverfasser: Guttentag, Andrew I. (VerfasserIn) , Barr, Kristopher K. (VerfasserIn) , Song, Tze-Bin (VerfasserIn) , Bui, Kevin V. (VerfasserIn) , Fauman, Jacob N. (VerfasserIn) , Torres, Leticia F. (VerfasserIn) , Kes, David D. (VerfasserIn) , Ciomaga, Adina (VerfasserIn) , Gilles, Jérôme (VerfasserIn) , Sullivan, Nichole F. (VerfasserIn) , Yang, Yang (VerfasserIn) , Allara, David L. (VerfasserIn) , Zharnikov, Michael (VerfasserIn) , Weiss, Paul S. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: November 7, 2016
In: Journal of the American Chemical Society
Year: 2016, Jahrgang: 138, Heft: 48, Pages: 15580-15586
ISSN:1520-5126
DOI:10.1021/jacs.6b06046
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jacs.6b06046
Volltext
Verfasserangaben:Andrew I. Guttentag, Kristopher K. Barr, Tze-Bin Song, Kevin V. Bui, Jacob N. Fauman, Leticia F. Torres, David D. Kes, Adina Ciomaga, Jérôme Gilles, Nichole F. Sullivan, Yang Yang, David L. Allara, Michael Zharnikov, and Paul S. Weiss
Beschreibung
Zusammenfassung:Cyanide monolayers on Au{111} restructure from a hexagonal close-packed lattice to a mixed-orientation “ribbon” structure through thermal annealing. The new surface structure loses most of the observed surface features characterizing the initial as-adsorbed system with “ribbon” domain boundaries isolating rotationally offset surface regions where the orientation is guided by the underlying gold lattice. A blue shift to higher frequencies of the CN vibration to 2235 cm-1 with respect to the as-adsorbed CN/Au{111} vibration at 2146 cm-1 is observed. In addition, a new low-frequency mode is observed at 145 cm-1, suggesting a chemical environment change similar to gold-cyanide crystallization. We discuss this new structure with respect to a mixed cyanide/isocyanide monolayer and propose a bonding scheme consisting of Au-CN and Au-NC bound molecules that are oriented normal to the Au{111} surface.
Beschreibung:Im Titel steht die Ziffer "111" in geschweiften Klammern
Gesehen am 28.08.2020
Beschreibung:Online Resource
ISSN:1520-5126
DOI:10.1021/jacs.6b06046

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