Heidelberg 2015 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 11: Posters 2: Novelties in Molecular Physics
MO 11.13: Poster
Dienstag, 24. März 2015, 17:00–19:00, C/Foyer
Metal cluster-diamondoid hybrids studied with ion yield spectroscopy — •Tobias Zimmermann1, Andre Knecht1, Robert Richter1, Andrea Merli1, Konstantin Hirsch2, Merle Röhr3, Jens Petersen3, Roland Mitric3, Tobias Lau2, Thomas Möller1, and Torbjörn Rander1 — 1Technische Universität Berlin — 2Helmholtz-Zentrum für Materialien und Energie, Berlin — 3Julius-Maximilians-Universität Würzburg
Diamondoids, a class of sp3-hybridized, hydrogen passivated carbon nanostructures, show shape and size dependent optical properties. They are interesting as light emitting materials due to their UV fluorescence properties. However, the fluorescence quantum yield of diamondoid compounds has been shown to be low.
Plasmon resonance effects are known to enhance the absorption and emission in nanometer-sized noble metal particles. Combinations of diamondoids with subnanometer metal clusters are promising candidates for the study of such fundamental coupling mechanisms, in a size regime where every atom counts, that might potentially increase the fluorescence quantum yield by orders of magnitudes.
Hybrids of diamondoids and noble metal clusters were synthesized and studied. Their absorption in a linear ion trap was recorded with ion yield spectroscopy both in the UV and the optical domain. We present the initial results of this study.