English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/50766
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Orthogonal interactions of CO molecules on a one-dimensional substrate

AuthorsFeng, Min; Cabrera-Sanfélix, Pepa ; Lin, Chungwei; Arnau, Andrés ; Sánchez-Portal, Daniel ; Zhao, Jin; Echenique, Pedro M. ; Petek, Hrvoje
Issue Date2011
PublisherAmerican Chemical Society
CitationACS Nano 5(11): 8877-8883 (2011)
AbstractWe investigate the chemisorption structure of CO molecules on the quasi-one-dimensional Cu(110)-(2 × 1)-O surface by low-temperature scanning tunneling microscopy and density functional theory. Contrary to flat metal surfaces, where CO molecules adsorb in an upright geometry and interact through repulsive intermolecular interactions, we find the most stable adsorption structure of single CO molecules to be at Cu atoms of substrate Cu-O- chains with the Cu-CO unit bent by ∼±45° in two equivalent structures at low coverages. At higher coverages, CO molecules combine in the same structure into highly ordered single-molecule-wide rows perpendicular to the substrate chains in an approximately 8 × 1 full monolayer structure. First-principles calculations attribute the unprecedented chemisorption behavior of CO molecules to lifting of the host Cu atoms by 1 Å from the surface Cu-O- chains, in order to optimize the bonding and reduce the repulsive interactions with the substrate. This structural distortion enables short-range intermolecular dipole-dipole attraction and creates orthogonal long-range surface-mediated repulsion leading to unusual self-assembly of CO molecules into coherent nanometer scale molecular grating structures. © 2011 American Chemical Society.
Identifiersdoi: 10.1021/nn203041c
issn: 1936-0851
Appears in Collections:(CFM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.