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Title:Structural phases of ordered FePc-nanochains self-assembled on Au(110)
Authors:ID Maria Grazia, Betti (Author)
ID Gargiani, Pierluigi (Author)
ID Mariani, Carlo (Author)
ID Biagi, Roberto (Author)
ID Fujii, Jun (Author)
ID Rossi, Giorgio (Author)
ID Resta, Andrea (Author)
ID Fabris, Stefano (Author)
ID Fortuna, Sara (Author)
ID Torrelles, Xavier (Author)
ID Kumar, Manvendra (Author)
ID Pedio, Maddalena (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Iron-phthalocyanine molecules deposited on the Au(110) reconstructed channels assemble into one-dimensional molecular chains, whose spatial distribution evolves into different structural phases at increasing molecular density. The plasticity of the Au channels first induces an ordered phase with a 5×5 symmetry, followed by a second long-range ordered structure composed by denser chains with a 5×7 periodicity with respect to the bare Au surface, as observed in the low-energy electron-diffraction (LEED) and grazing incidence X-ray diffraction (GIXRD) patterns. The geometry of the FePc molecular assemblies in the Au nanorails is determined by scanning tunneling microscopy (STM). For the 5×7 phases, the GIXRD analysis identifies a “4-3” rows profile along the [001] direction in the Au surface and an on-top FePc adsorption site, further confirmed by density functional theory (DFT) calculations. The latter also reveals the electronic mixing of the interface states. The chain assembly is driven by the molecule–molecule interaction and the chains interact with the Au nanorails via the central metal atom, while the chain–chain distance in the different structural phases is primarily driven by the plasticity of the Au surface.
Keywords:STM, LEED, DFT, density functional theory, phthalocyanine, Au(110), gold, surface
Year of publishing:2012
Number of pages:13232-13240
Numbering:28, 37
PID:20.500.12556/RUNG-2669 New window
COBISS.SI-ID:4541947 New window
DOI:10.1021/la302192n New window
Publication date in RUNG:13.10.2016
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Record is a part of a journal

Shortened title:Langmuir
Publisher:American Chemical Society
Year of publishing:2012