Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 51: Focus Session: Molecular Nanostructures on Surfaces: On-Surface Synthesis and Single-Molecule Manipulation II
O 51.5: Vortrag
Mittwoch, 20. März 2024, 16:15–16:30, HE 101
On-surface synthesis of non-planar carbon nanoribbons — Feifei Xiang1, Sven Maisel2, •Shreya Garg1, Andreas Görling2, and Sabine Maier1 — 1Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany — 2Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Graphene nanoribbons have great potential for applications in nanoelectronic devices such as transistors by combining the outstanding electronic properties of graphene with the introduction of an electronic band gap. In this study, we present a bottom-up synthesis approach for covalently linked non-planar carbon nanoribbons. We discuss the electronic properties of the non-planar carbon ribbons in relation to their adsorption geometry using low-temperature scanning tunneling microscopy and spectroscopy in combination with density functional theory. The synthesis involves bowl-shaped dibrominated indacenopicene precursors to create non-planar carbon ribbons through surface-assisted Ullmann-type dehalogenative coupling and cyclodehydrogenation on Au(111).
Keywords: STM; Graphene nanoribbons; On-surface synthesis