Berlin 2018 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 109: Focus Session: Molecular Nanostructures on surfaces - New Concepts towards Complex Architectures VII
O 109.5: Vortrag
Freitag, 16. März 2018, 11:30–11:45, MA 004
Aggregation by Metallophilic Interaction — •Michael Györök1, Sebastian Wolfmayr1, Petra Gründlinger1,2, Uwe Monkowius3, Peter Zeppenfeld1, and Thorsten Wagner1 — 1Johannes Kepler University, Experimental Physics, Linz, Austria — 2Johannes Kepler University, Inorganic Chemistry, Linz, Austria — 3Johannes Kepler University, School of Education, Linz, Austra
Metallophilicity describes attractive interactions between two or more metal atoms with closed shell configurations (i.e. d8, d10). Metal complexes containing gold in the formal oxidation state +I show very strong attractions, which are therefore also referred to as aurophilicity [1,2]. As a result, the aurohilic interactions determine often the arrangement of gold(I) complexes in the solid state. However, there are almost no examples in the literature, where this attractive interaction has been studied on surfaces. 2-naphthyl-isonitrile-gold(I)-chloride is and stable enough to sublime under ultrahigh vacuum conditions at moderate temperatures of 400 K. Ultrathin films of this molecule were prepared by physical vapor deposition on Au(111) surfaces. The deposition was monitored by differential reflectance spectroscopy (DRS) and photoelectron emission microscopy (PEEM). Finally, the structure of the organic film was analyzed by scanning tunneling microscopy (STM) and low energy electron diffraction (LEED) confirming an anti-dimer structure similar to the known bulk structure.
[1] P. Pyykkö, Chem. Rev. 97, 597 (1997).
[2] F. Schwerbaum et al., Angew. Chemie 27, 1544 (1988).