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          Institute: Fritz-Haber-Institut     Collection: Molecular Physics     Display Documents



  history
ID: 25846.0, Fritz-Haber-Institut / Molecular Physics
Can glycine form homochiral structural domains on low-index copper surfaces?
Authors:Toomes, Rachel L.; Kang, J.-H.; Woodruff, David Phillip; Polcik, Martin; Kittel, Martin; Hoeft, Jon T.
Language:English
Date of Publication (YYYY-MM-DD):2003-01-01
Title of Journal:Surface Science
Journal Abbrev.:Surf. Sci.
Volume:522
Issue / Number:1-3
Start Page:L9
End Page:L14
Copyright:2002 Elsevier Science B.V.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Suggestions that homochiral ordered phases of glycinate, NH2CH2COO–, may exist on Cu(1 1 0) and Cu(1 0 0) have been evaluated in the light of experimental evidence from scanning tunnelling microscopy (STM), qualitative low energy electron diffraction and scanned-energy mode photoelectron diffraction. There is clear evidence for heterochiral Cu(1 1 0)(3¥2)pg and Cu(1 0 0)(4¥2)pg phases. All proposed models for a homochiral (3¥2) phase on Cu(1 1 0) are inconsistent with the results of at least one of the experimental studies. A coexistent c(4¥2) homochiral phase on Cu(1 0 0) cannot be excluded on a similar basis. However, the only evidence for such homochiral phases, obtained from STM, may be attributed to an experimental artefact associated with an asymmetric tunnelling tip.
Free Keywords:Chemisorption; Biological molecules – proteins; Surface structure; morphology; roughness; topography
External Publication Status:published
Document Type:Article
Communicated by:Gerard Meijer
Affiliations:Fritz-Haber-Institut/Molecular Physics
External Affiliations:Department of Physics, University of Warwick, Coventry, UK
Identifiers:URL:http://www.sciencedirect.com/science?_ob=ArticleUR... [only for subscribers]
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