Regensburg 2025 – scientific programme
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O: Fachverband Oberflächenphysik
O 50: Poster Organic Molecules on Inorganic Substrates: Adsorption and Growth
O 50.1: Poster
Tuesday, March 18, 2025, 18:00–20:00, P2
Polymorphism of Naphthalene on Ag(111) in and out of thermodynamic equilibrium — •Lorenz Brill1, Christoph Wachter2, Roman Forker1, Oliver T. Hofmann2, and Torsten Fritz1 — 1Friedrich-Schiller-Universität, Jena, Germany — 2Technische Universität, Graz, Austria
Even with a seemingly simple molecule like naphthalene, a rich polymorphism has been observed on Cu(111). Additionally, calculated phase diagrams predict multiple different structures of naphthalene on Ag(111), depending on the pressure and temperature during naphthalene deposition. In this poster, we present first experimental results of naphthalene structures formed in thermodynamic equilibrium obtained in our custom chamber specially designed to enable molecular growth in thermodynamic equilibrium. We compare our results to naphthalene structures grown using a conventional setup.
Keywords: LEED; Epitaxy; Molecular growth; Thermodynamic equilibrium; Phase diagram