Stuttgart 2012 – scientific programme
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A: Fachverband Atomphysik
A 46: Cluster
A 46.4: Talk
Friday, March 16, 2012, 11:15–11:30, V38.02
Electronic structure and binding energies of structurally modified diamondoid complexes studied with photoemission spectroscopy — •Tobias Zimmermann1, Robert Richter1, David Wolter1, Torbjörn Rander1, Peter Schreiner2, and Thomas Möller1 — 1Technische Universität Berlin, Institut für Optik und Atomare Physik — 2Justus-Liebig-Universität Gießen, Institut für Organische Chemie
While the smallest diamondoids, in particular Adamantane, have been known for some decades as perfectly shape- and mass-selectable carbon clusters, their significant scientific interest has risen only in the last few years. This is due to the fact that now also the larger ones have become more widely available due to new extraction and synthesis possibilities. Adamantane, with only ten carbon atoms, can be seen as the smallest unit of the macroscopic diamond crystal structure. The electronic structure of such nanoparticles can be analyzed with the help of photoemission spectroscopy (PES). In recent experiments we investigated the electronic structure of structurally modified lower diamondoids and lower diamondoid complexes. In particular we focus on lower diamondoid complexes containing sp2-impurities. These systems are of interest due to the fact that sp2-impurities in bulk diamond are known to enhance luminescence. Recently, it has also been reported that this type of structures possesses some of the longest C-C bonds known, the peculiarities of which may be studied by using PES.