Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 124, Issue 40, Pages 22137-22142Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.0c05908
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Funding
- ANR program project MAGMA [ANR-16-CE29-0027-01]
- French National Research Agency (ANR) as part of the Investissements d'Avenir program [ANR-10-LABX-0035]
- Agence Nationale de la Recherche (ANR) [ANR-16-CE29-0027] Funding Source: Agence Nationale de la Recherche (ANR)
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Molecular self-assembly on surfaces is driven by the range of interactions between the molecules themselves and the substrate. Generally, a face-on structure is favored for aromatic molecules lying flat on the surface. Here, we report on the supramolecular self-assembly of 5,10,15,20-tetrakis(10-bromoanthracen-9-yl)porphyrin on the Ag(111) and Ag(110) surfaces. Well-ordered molecular chains were observed by room-temperature scanning tunneling microscopy on both surfaces. The relatively small size of the unit cell revealed an edge-on configuration of the porphyrin macrocycles, that is, perpendicular to the surface plane, as confirmed by molecular mechanics calculations. Distinct intermolecular interactions were found on the two surfaces, providing different molecular chain orientations on Ag(111) and Ag(110).
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