Berlin 2014 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 10: Posters 2: Biomolecules, Energy Transfer, Clusters, Quantum Chemistry, Molecular Dynamics and Chirality
MO 10.11: Poster
Dienstag, 18. März 2014, 16:30–18:30, Spree-Palais
Vibrationally resolved fluorescence spectra of higher diamondoids — •Andrea Merli1, Robert Richter1, Christoph Heidrich1, Ramon Rahner1, Torbjörn Rander1, Jeremy Dahl2, Robert Carlson2, Jens Petersen3, Merle Röhr3, Roland Mitric3, and Thomas Möller1 — 1Institut für Optik und Atomare Physik,Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany — 2Stanford Institut for Materials and Energy Science, Stanford University, California, 94305, USA — 3Institut für Physikalische und Theoretische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
Size and shape selected pristine diamondoids are optimal interaction-free systems for the investigation of electronic properties of molecular clusters in the gas phase. Vibrationally resolved emission spectra were obtained by exciting higher diamondoids with narrow band ultraviolet laser light. The origin of the spectra is found to be on transitions from the first electronically excited state into different vibrational modes of the electronic ground state. Quantum chemical calculations offer an accurate vibrational analysis of the diamondoids spectra making the assignment of the optically active normal modes possible.