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Dresden 2020 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 64: Organic Molecules on Inorganic Substrates IV: Adsorption, Growth and Networks

O 64.11: Vortrag

Mittwoch, 18. März 2020, 13:15–13:30, TRE Phy

Adsorption and intercalation of Zn porphines at the h-BN interface on Cu(111) — •Aleksandr Baklanov1, David Duncan2, Martin Schwarz1, Knud Seufert1, Johannes Küchle1, Paul Ryan2,3, Ignacio Piquero-Zulaica1, Francesco Allegretti1, and Willi Auwärter11Physics Department E20, Technical University of Munich, Germany — 2Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK — 3Department of Materials, Imperial College London, South Kensington, London, UK

Two-dimensional h-BN is an insulating layer used frequently to decouple adsorbed (metal-)organic molecules from the underlying metal single crystal support, thus preventing the strong influence of the latter on the molecular geometric and electronic properties [1,2]. The adsorption of Zn-porphine molecules on h-BN/Cu(111) as well as intercalation by placing the molecules between the h-BN cover and the Cu(111) [3], reveals distinct differences compared to porphine adsorption on bare Cu(111) [4]. Here we address the molecular conformation, adsorption structure, functionality of adsorbed and intercalated porphines, combined with the electronic and geometric structure of the h-BN by means of X-ray standing waves (XSW), X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy/spectroscopy (STM/STS).

[1] W. Auwärter, Surf. Sci. Rep. 74, 1 (2019).

[2] M. Schwarz et al., Nanoscale 10, 21971 (2018).

[3] J. Ducke et al., ACS Nano 12, 2677 (2018).

[4] M. Schwarz et al., J. Phys. Chem. C 122, 5452 (2018).

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