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Structural Phases of Ordered FePc-Nanochains Self-Assembled on Au(110) (Articolo in rivista)

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Structural Phases of Ordered FePc-Nanochains Self-Assembled on Au(110) (Articolo in rivista) (literal)

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Maria Grazia Betti,+ Pierluigi Gargiani,+ Carlo Mariani,? Roberto Biagi,§,? Jun Fujii,? Giorgio Rossi,?,? Andrea Resta,? Stefano Fabris,?,# Sara Fortuna,?,# Xavier Torrelles,+ Manvendra Kumar,? and Maddalena Pedio? (2012)
Structural Phases of Ordered FePc-Nanochains Self-Assembled on Au(110)
in Langmuir (Online); ACS, American chemical society, Washington, DC (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Maria Grazia Betti,+ Pierluigi Gargiani,+ Carlo Mariani,? Roberto Biagi,§,? Jun Fujii,? Giorgio Rossi,?,? Andrea Resta,? Stefano Fabris,?,# Sara Fortuna,?,# Xavier Torrelles,+ Manvendra Kumar,? and Maddalena Pedio? (literal)

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+Dipartimento di Fisica, Universita? di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma, Italy ?Dipartimento di Fisica, CNISM, CNIS, Universita? di Roma La Sapienza, Piazzale Aldo Moro 2, I - 00185 Roma, Italy §Dipartimento di Fisica, Universita? di Modena e Reggio Emilia, via G. Campi 213/A, I-41100 Modena, Italy ?CNR-NANO, Institute of Nanoscience, S3 Center, I-41125 Modena, Italy ?CNR-IOM TASC, Area Science Park S.S. 14, km 163.5, I-34149 Trieste, Italy ?Dipartimento di Fisica, Universita? di Milano, via Celoria 16, I-20133 Milano, Italy ?European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France ?CNR-IOM DEMOCRITOS, Theory@Elettra group, S.S. 14, km 163.5, I-34149 Trieste, Italy #SISSA, Via Bonomea 265, I-34136, Trieste, Italy +Institut de Cie?ncia de Materials de Barcelona, ICMAB-CSIC, 08193 Barcelona, Spain (literal)

Titolo

Structural Phases of Ordered FePc-Nanochains Self-Assembled on Au(110) (literal)

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. (literal)

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