title: Hexagons to Ribbons: Flipping Cyanide on Au{111}.
abstract: 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-1with respect to the as-adsorbed CN/Au{111} vibration at 2146 cm-1is 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.
authors.affiliation: California NanoSystems Institute, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095, United States.
authors.forename: Andrew I
authors.initials: AI
authors.lastname: Guttentag
authors.affiliation: California NanoSystems Institute, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095, United States.
authors.forename: Kristopher K
authors.initials: KK
authors.lastname: Barr
authors.affiliation: California NanoSystems Institute, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Material Science and Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States.
authors.forename: Tze-Bin
authors.initials: TB
authors.lastname: Song
authors.affiliation: Department of Mathematics, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Industrial Engineering and Management Sciences, Northwestern University , Evanston, Illinois 60208, United States.
authors.forename: Kevin V
authors.initials: KV
authors.lastname: Bui
authors.affiliation: Department of Mathematics, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Physics, University of California , Santa Barbara, California 93106, United States.
authors.forename: Jacob N
authors.initials: JN
authors.lastname: Fauman
authors.affiliation: Department of Mathematics, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Mathematics, University of San Francisco , San Francisco, California 94117, United States.
authors.forename: Leticia F
authors.initials: LF
authors.lastname: Torres
authors.affiliation: Department of Mathematics, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Mathematics and Natural Sciences, California State University , Long Beach, California 90840, United States.
authors.forename: David D
authors.initials: DD
authors.lastname: Kes
authors.affiliation: Department of Mathematics, Laboratoire Jacques Louis Lions, Université Paris Diderot , 5 Rue Thomas Mann, Paris 75013, France.
authors.forename: Adina
authors.initials: A
authors.lastname: Ciomaga
authors.affiliation: Department of Mathematics and Statistics, San Diego State University , San Diego, California 92182, United States.
authors.forename: Jérôme
authors.initials: J
authors.lastname: Gilles
authors.affiliation: Department of Chemistry, Pennsylvania State University , University Park, Pennsylvania 16802, United States.
authors.forename: Nichole F
authors.initials: NF
authors.lastname: Sullivan
authors.affiliation: California NanoSystems Institute, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Material Science and Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Chemistry, Pennsylvania State University , University Park, Pennsylvania 16802, United States.
authors.forename: David L
authors.initials: DL
authors.lastname: Allara
authors.affiliation: Applied Physical Chemistry, Heidelberg University , 69120 Heidelberg, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Zharnikov
authors.affiliation: California NanoSystems Institute, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Chemistry and Biochemistry, University of California, Los Angeles , Los Angeles, California 90095, United States.|Department of Material Science and Engineering, University of California, Los Angeles , Los Angeles, California 90095, United States.
authors.forename: Paul S
authors.initials: PS
authors.lastname: Weiss