Self-assembly of a triphenylene-based electron donor molecule on graphene: structural and electronic properties
In this study, we report on the self-assembly of the organic electron donor 2,3,6,7,10,11-hexamethoxytriphenylene (HAT) on graphene grown epitaxially on Ir(111). Using scanning tunneling microscopy and low-energy electron diffraction, we find that a monolayer of HAT assembles in a commensurate close...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 1, 2022
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| In: |
The journal of physical chemistry. C, Energy, materials, and catalysis
Year: 2022, Jahrgang: 126, Heft: 23, Pages: 9855-9861 |
| ISSN: | 1932-7455 |
| DOI: | 10.1021/acs.jpcc.1c10266 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.jpcc.1c10266
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| Verfasserangaben: | Joris de la Rie, Mihaela Enache, Qiankun Wang, Wenbo Lu, Milan Kivala, and Meike Stöhr |
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| 520 | |a In this study, we report on the self-assembly of the organic electron donor 2,3,6,7,10,11-hexamethoxytriphenylene (HAT) on graphene grown epitaxially on Ir(111). Using scanning tunneling microscopy and low-energy electron diffraction, we find that a monolayer of HAT assembles in a commensurate close-packed hexagonal network on graphene/Ir(111). X-ray and ultraviolet photoelectron spectroscopy measurements indicate that no charge transfer between the HAT molecules and the graphene/Ir(111) substrate takes place, while the work function decreases slightly. This demonstrates that the HAT/graphene interface is weakly interacting. The fact that the molecules nonetheless form a commensurate network deviates from what is established for adsorption of organic molecules on metallic substrates where commensurate overlayers are mainly observed for strongly interacting systems. | ||
| 700 | 1 | |a Enache, Mihaela |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wang, Qiankun |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lu, Wenbo |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kivala, Milan |e VerfasserIn |0 (DE-588)120357231X |0 (DE-627)1688558489 |4 aut | |
| 700 | 1 | |a Stöhr, Meike |d 1971- |e VerfasserIn |0 (DE-588)123947529 |0 (DE-627)706484673 |0 (DE-576)293954690 |4 aut | |
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