Heidelberg 2015 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 16: Posters 3: Novelties in Molecular Physics
MO 16.13: Poster
Mittwoch, 25. März 2015, 17:00–19:00, C/Foyer
Electronic structure of thionized diamondoids. — •Theresa Höhne1, André Knecht1, Robert Richter1, Tobias Zimmermann1, Andrea Merli1, Paul Kahl2, Peter Schreiner2, Thomas Möller1, and Torbjörn Rander1 — 1Institut für Optik und Atomare Physik, Technische Universität Berlin — 2Institut für Organische Chemie, Justus-Liebig-Universität Giessen
Diamondoids, a fascinating class of mass and shape selected, hydrogen passivated, sp3-hybridized carbon nano-cages, allow a direct tuning of their properties through functionalization. Since pristine diamondoids show intrinsic UV photoluminescence, sulfurization is a promising step to alter their optical gap to the VIS/IR spectral region by varying the number of thione groups [1].
We investigated the electronic structure of this new group of funtionalized nanodiamond, diamondoid thiones.
For our purpose adamantane-2-thione up to higher cage structures such as [1(2,3)4]pentamantane-6-thione were studied. To measure spectra of the sublimated diamondoids we used synchrotron radiation at BESSY II and an OPO laser system to cover a broad spectral region. In addition we performed DFT calculations which assist in the interpretation of our experimental findings.
We present the first results from valence photoelectron-, absorption- and fluorescence spectroscopy.
[1] M. Vörös, T. Demjén, T. Szilvási, und A. Gali, Phys. Rev. Lett. 108 , 267401 (2012).