Impact of the Substrate Work Function on Self-Assembling and Electronic Structure of Adsorbed Ruthenium Phthalocyanine
| Autor: | Colonna, Stefano, Zanotti, Gloria, Paoletti, Anna Maria, Pennesi, Giovanna, Alippi, Paola, Filippone, Francesco, Amore Bonapasta, Aldo, Larciprete, Rosanna, Ronci, Fabio, Mattioli, Giuseppe |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Electronic structure Substrate (electronics) Molecules Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound General Energy Adsorption chemistry Metals law Molecular interactions Phthalocyanine Physical chemistry Work function Density functional theory Graphite Physical and Theoretical Chemistry Scanning tunneling microscope Layers Scanning tunneling microscopy |
| Zdroj: | Journal of physical chemistry. C 124 (2020): 23295–23306. doi:10.1021/acs.jpcc.0c08487 info:cnr-pdr/source/autori:Colonna, Stefano and Zanotti, Gloria and Paoletti, Anna Maria and Pennesi, Giovanna and Alippi, Paola and Filippone, Francesco and Amore Bonapasta, Aldo and Larciprete, Rosanna and Ronci, Fabio and Mattioli, Giuseppe/titolo:Impact of the Substrate Work Function on Self-Assembling and Electronic Structure of Adsorbed Ruthenium Phthalocyanine/doi:10.1021%2Facs.jpcc.0c08487/rivista:Journal of physical chemistry. C/anno:2020/pagina_da:23295/pagina_a:23306/intervallo_pagine:23295–23306/volume:124 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.0c08487 |
| Popis: | We report on a systematic study of bis-rutheniumphthalocyanine, (RuPc)2, layers deposited on Au(111), Ag(111), andgraphite. By scanning tunneling microscopy and density functional theorycalculations, a detailed picture of the molecular orbitals rearrangementdue to the contact with the substrate is drawn, which reveals a significantsubstrate impact on the molecule charge and spin patterns. On the metalsubstrates a reduction of the Ru-Ru dimer magnetic moment is observeddue to thefilling of a spin-down singly unoccupied molecular orbital.However, the higher work function of Au(111) induces a chargebackdonation, which results in an unexpected spin polarization of themolecule ligand. On the other hand, the contact with graphite leaves theelectronic and magnetic properties of (RuPc)2largely unaffected. The self-assembling process of the molecules on the different substrates has alsobeen thoroughly investigated and interpreted in the light of molecular orbital rearrangements. On the low interacting graphitesubstrate, the process is mainly driven by molecule-molecule interactions leading to a square structure. Conversely, on Ag(111) andAu(111), the stronger molecule-substrate interaction produces a more complex scenario characterized by a manifold of structures. |
| Databáze: | OpenAIRE |
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