Hannover 2010 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 1: Electronic spectroscopy I
MO 1.7: Vortrag
Montag, 8. März 2010, 15:45–16:00, F 102
Excited states dynamics of organic mixed valence compounds — •Juliane Köhler1, Markus Margraf1, Ingo Fischer1, and Christoph Lambert2 — 1Institut für Physikalische und Theoretische Chemie, Universität Würzburg — 2Institut für Organische Chemie, Universität Würzburg
Organic mixed valence (MV) compounds have been proven to be excellent model systems for the investigation of the electron tranfer behaviour in solution. These compounds consist of two redox centers in different oxidation states that are connected via a saturated or unsaturated bridge. While most of the MV systems are radical ions which are only soluble in polar solvents, we studied a series of uncharged moieties by transient absorption spectroscopy in a wide range of solvents. Our interest is aimed at the charge transfer dynamics in one dimensional, two dimensional and polymeric systems on the one hand. Second, we studied the dependence of the solvent polarity on the rate constant of the back-electron transfer after optical excitation.