Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 108: Graphene: Adsorption, Intercalation and Other Aspects
O 108.1: Vortrag
Freitag, 24. März 2017, 10:30–10:45, TRE Ma
Radiation reduced CNM formation from halogenated biphenylthiols — •Sascha Koch1, Christoph D. Kaiser1, Lena Frommeyer1, Patrick Stohmann1, Tarek Abu-Husein2, Andreas Terfort2, and Armin Gölzhäuser1 — 1Department of Physics, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany — 2Department of Chemistry, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt, Germany
Carbon Nano Membranes (CNM) are mechanical stable and homogeneous quasi 2D systems which are formed by the electron radiation induced cross linking of molecules in specific self-assembled monolayers (SAM) grown on substrates like e.g. gold or copper. Contrary to graphene, as the most popular 2D system, the CNM structural and functional properties can be tailored by the selection and composition of appropriate precursors for the SAM formation as for instance phenylthiols or naphthalenes [1,2]. Here, the study of SAMs from halogenated biphenylthiols on a Au(111) substrate is presented. These precursor molecules allow in contrast to hydrogenated biphenylthiols the cross linking of SAMs for the formation of a CNM at a highly reduced electron doses. Additionally, this specific doping of biphenyls provides an insight to the mechanisms of the formation of CNMs. [1] P. Angelova et al., ACS Nano, 2013, 7, 6489-6497 [2] A. Turchanin and A. Gölzhäuser, Adv. Mat. 2016, 28 6075-6103