Hannover 2013 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 14: Poster 1: Cluster, Femtosecond Spectroscopy

MO 14.1: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Ultrafast photochemistry of a CO-releasing molecule under two-photon excitation — Philipp Rudolf¹, Florian Kanal¹, •Johannes Knorr¹, Christoph Nagel², Ulrich Schatzschneider², and Patrick Nuernberger¹ — ¹Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg — ²Institut für Anorganische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg

There is steadily increasing interest in CO-releasing molecules (CORMs) as a promising in-situ source of carbon monoxide, which is an important endogenous gasotransmitter in higher organisms, including humans [1,2]. In previous UV-pump/MIR-probe studies on [Mn(CO)₃(tpm)]Cl in aqueous solution, we could show that several electronic transitions in the UV will lead to CO release and that only one CO ligand is released within the first few picoseconds after UV excitation. With regard to biological applications, we currently aim at the elucidation of the primary reaction steps of the above-mentioned CORM under two-photon excitation. Using pump wavelengths from the therapeutic window, the employment of tissue-damaging UV light can be avoided. Moreover, this approach benefits from the capability to selectively excite well-defined volumes owing to the non-linear interaction step.
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