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Berlin 2012 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 52: Poster II - Magnetic Heusler compounds, Magnetic shape memory alloys, Thin Films, Micro-/Nano-structured magnetic materials, Graphene, Spins in organics, Magnetic imaging, Surface Magnetism, Spin excitations/Torque, Spincaloric transport

MA 52.41: Poster

Freitag, 30. März 2012, 11:00–14:00, Poster A

Transport properties of novel Anthraquinone based molecular switches — •Simon Liebing1, Torsten Hahn1, Nadine Seidel2, Tim Ludwig3, and Jens Kortus11Institut for Theoretical Physics, TU Bergakademie Freiberg, 09596 Freiberg, Germany — 2Institut for Organic Chemistry, TU Bergakademie Freiberg, 09596 Freiberg, Germany — 3Institute for Theoretical Physics, TU Dresden, 01062 Dresden, Germany

Anthraquinone derivatives were recently reported to be good candidates for application as molecular switches [1]. We present a novel molecular system based on the anthraquinone-core π conjugated spacers and linkers units. The influence on the transport properties of model junctions by chemical modifications of the anthraqunine-core as well as the impact of difficult linker units is discussed. The authors show how chemical modifications can be used for Fermi level and band gap engineering. The theoretical results based on DFT [2] and NEGF [3] calculations are used to suggest further optimizations of the molecular system.

[1] Elisabeth H. van Dijk et al., Synthesis and Properties of an Anthraquinone-Based Redox Switch for Molecular Electronics, Org. Lett. 8, no. 11 (November 30, 2011): 2333-2336. [2] M. Pederson, D. Porezag, J. Kortus, and D. Patton, Phys. Status Solidi b - Basic Res., 2000,217, 197. [3] S. Datta, Nanotechnology, 2004, 15, 433.

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