Stuttgart 2012 – scientific programme
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MO: Fachverband Molekülphysik
MO 21: Poster 3: Cluster, Collisions, Energy Transfer, Photochemistry, Spectroscopy in He-Droplets
MO 21.9: Poster
Thursday, March 15, 2012, 16:30–19:00, Poster.IV
Photoluminesce of Diamondoids with sp2-Impurities — •Robert Richter1, Torbjörn Rander1, Tobias Zimmermann1, Andre Knecht1, Christoph Heidrich1, Andrea Merli1, Phillip Reiß2, Arno Ehresmann2, and Thomas Möller1 — 1Technische Universität Berlin, Institut für Optik und Atomare Physik, Eugene-Wigner-Building, Hardenbergstrasse 36, D-10623 Berlin — 2Institut für Physik Universität Kassel, Heinrich-Plett-Straße 40, D-34109 Kassel
Nanodiamonds, so called diamondoids are carbon clusters with perfect bulk diamond structure and complete hydrogen passivation. In previous studies we could show that certain diamondoids luminesce in the deep UV. Only recently a new class of diamondoids have been synthesized where one or more C-C-bonds exhibit sp2-hybridization. These deviations from the diamond structure can be seen as sp2-impurities which alter the overall electronic structure of the diamondiod. Absorption, photoluminescence and excitation spectra show that tuning of the optical properties by deliberate introduction of these impurities is possible.