Zinc(II) tetraphenylporphyrin on Au(111) investigated by scanning tunnelling microscopy and photoemission spectroscopy measurements
| Autor: | Jun Fujii, Alfonso Policicchio, Daniela Pacilé, Marco Papagno, I. Grimaldi, T. Caruso, Raffaele Giuseppe Agostino, Oreste De Luca, Ivana Vobornik, Vincenzo Formoso |
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| Přispěvatelé: | Surfaces and Thin Films |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
ADSORPTION Photoemission spectroscopy Supramolecular chemistry STM Bioengineering 02 engineering and technology PHTHALOCYANINE 010402 general chemistry 01 natural sciences law.invention 2H-TETRAPHENYLPORPHYRIN chemistry.chemical_compound CHARGE-TRANSFER law Tetraphenylporphyrin Monolayer Molecule General Materials Science Electrical and Electronic Engineering PORPHYRIN MOLECULES Surface diffusion photoemission spectroscopy Mechanical Engineering Self-assembled monolayer General Chemistry gold surface 021001 nanoscience & nanotechnology 0104 chemical sciences CONFORMATION ARRAYS SURFACE-DIFFUSION chemistry Mechanics of Materials Chemical physics self-assembled monolayer NICKEL(II) TETRAPHENYLPORPHYRIN Scanning tunneling microscope 0210 nano-technology porphyrin |
| Zdroj: | Nanotechnology, 31(36):365603. IOP PUBLISHING LTD |
| ISSN: | 0957-4484 |
| Popis: | Porphyrins are a versatile class of molecules, which have attracted attention over the years due to their electronic, optical and biological properties. Self-assembled monolayers of porphyrins were widely studied on metal surfaces in order to understand the supramolecular organization of these molecules, which is a crucial step towards the development of devices starting from the bottom-up approach. This perspective could lead to tailor the interfacial properties of the surface, depending on the specific interaction between the molecular assembly and the metal surface. In this study, we revisit the investigation of the assembly of zinc-tetraphenylporphyrins on Au(111) in order to explore the adsorption of the molecular network on the noble metal substrate. The combined analysis of scanning tunneling microscopy (STM) imaging and core levels photoemission spectroscopy measurements support a peculiar arrangement of the ZnTPP molecular network, with Zn atoms occupying the bridge sites of the Au surface atoms. Furthermore, we prove that, at few-layers coverage, the interaction between the deposited layers allows a relevant molecular mobility of the adlayer, as observed by STM and supported by core levels photoemission analysis. |
| Databáze: | OpenAIRE |
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