Berlin 2014 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 20: Electronic Spectroscopy 2

MO 20.7: Vortrag

Donnerstag, 20. März 2014, 18:00–18:15, BEBEL SR144

From 5 to 6: High resolution laser induced fluorescence spectroscopy of differently substituted indole derivatives. — •Martin Wilke, Josefin Wilke, and Michael Schmitt — Heinrich-Heine-Universität, Institut für Physikalische Chemie I, Düsseldorf

The assignment of the electronic nature of several 6-substituted indole derivatives with high resolution laser induced fluorescence spectroscopy will be presented. Its characterization to an La or an Lb state based on the nomenclature of Platt results of some molecular parameters like the orientation of the transition dipole moment, the changes of the bond lengths or the frontier orbital contribution upon excitation. Comparing the experimental results with state-of-the-art ab initio calculations shows a strong discrepancy in the orientation of the transition dipole moment from the results for the 5-substituted indoles. The surprising behavior of the 6-substituted derivatives compared to the 5-substituted derivatives will be discussed.