Self-Assembly of Linear Three-Ring Aromatic Thiols on Au(111)
We report on the self-assembly of linear three-ring aromatic thiols on Au(111)/mica substrates. Our study examines terphenylthiol (TPT) derivatives with distinct terminal groups -F (FTPT), -CF<sub>3</sub> (CF<sub>3</sub>TPT) and -NO<sub>2</sub> (NTPT) as well as a pyridinebiphenyl (PyBPT) compound. Using complementary surface science techniques─X-ray photoelectron spectroscopy (XPS), low-energy electron diffraction (LEED), and scanning tunneling microscopy (STM)─we elucidate the structural properties of the resulting self-assembled monolayers (SAMs). The TPT, FTPT, CF<sub>3</sub>TPT and PyBPT molecules form densely packed SAMs with hexagonal unit cells exhibiting an area of 21.55 Å<sup>2</sup> per molecule. For the NTPT SAM, two different molecular arrangements were observed to coexist: a hexagonal structure and a squared structure, with areas per molecule of 21.55 and 42.25 Å<sup>2</sup>, respectively.
Authors
- Daniel Hüger
- Verena Müller (ORCID: https://orcid.org/0000-0003-2291-2070)
- Christof Neumann (ORCID: https://orcid.org/0000-0002-3598-7656)
- Julian Picker (ORCID: https://orcid.org/0000-0002-7900-3807)
- Andrey Turchanin (ORCID: https://orcid.org/0000-0003-2388-1042)
- Anna‐Laurine Gaus
- Max von Delius
Institutions
- Universität Ulm (DE)
- Friedrich Schiller University Jena (DE)
Publication Details
- Journal
- The Journal of Physical Chemistry Letters
- Published
- 2026-02-02
- DOI
- https://doi.org/10.1021/acs.jpclett.5c03949
- Primary Topic
- Molecular Junctions and Nanostructures
- Type
- article
- Field-Weighted Citation Impact
- 0.00