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Darmstadt 2008 – scientific programme

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MO: Fachverband Molekülphysik

MO 2: Elektronische Spektroskopie

MO 2.5: Talk

Monday, March 10, 2008, 17:30–17:45, 3F

Time-resolved photoelectron spectroscopy of DNA base clusters — •Thomas Schultz1, Elena Samoylova1, Yuliya Rulyk1, Hans-Herman Ritze1, Wolfgang Radloff1, and Ingolf Volker Hertel1,21Max-Born Institut Berlin, Max-Born-Strasse 2A, 12489 Berlin — 2Fachbereich Physik der Freien Universität Berlin, Arnimallee 14, 14195 Berlin

The photochemistry of large molecules can be due to inherent properties of the light-absorbing chromophores, but can also be can be dominated by intermolecular interactions. The latter play a very important role in biological systems, where well defined structure often determines molecular function. We investigate the photochemistry, and in particular the photostability, of DNA building blocks in vacuo and try to reproduce structural features in small molecular clusters. Reaction and relaxation pathways can be mapped in real time by time-resolved pump-probe ionization and coincident detection of electrons and ions.

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