Regensburg 2019 – scientific programme
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O: Fachverband Oberflächenphysik
O 60: Organic Molecules on Inorganic Substrates IV: Electronic Properties, Excitations, Dynamics
O 60.10: Talk
Wednesday, April 3, 2019, 17:15–17:30, H24
Metalation and Polymerization of 5,5’-Dibromosalophene on Co-intercalated Graphene — •Julia Goedecke1, Micha Elsebach1, Michael Rohde1, Emil Sierda1,2, Maciej Bazarnik1,2, and Roland Wiesendanger1 — 1Dept. Physics, University of Hamburg, D-20355 Hamburg, Germany — 2Institute of Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
Salophene complexes are suitable for molecular spintronic applications due to their chemical structure and electronic and magnetic properties. In previous work of Bazarnik et al. a concept for an all-spin molecular device with Co-salophenes on Au(111) has already been presented[1]. Using STM and STS we will show that such an approach can also be realized on Co-intercaleted graphene on Ir(111), a much more inert surface that limits the hybridization with the complexes and does not show a Kondo-effect, as is the case with Co-Salophenes on Au(111)[2]. For this purpose 5,5’-Dibromosalophenes were metallized in situ via surface reaction in UHV with different transition metals, namely with Co, Cr and Fe. Furthermore, we will show that these in situ produced Salophene complexes can be polymerized on the graphene surface via Ullmann like reaction[3] and therefore are suitable for a molecular spintronic device.
[1] M. Bazarnik et al., Nano Lett. 16, 577 (2016)
[2] A. DiLullo et al., Nano Lett. 12, 3174 (2012)
[3] F. Ullmann et al., Chemische Berichte, 34 (2): 2174 (1901)