PT Unknown AU Schwalb, NK TI Ultrafast electronic deactivation dynamics in DNA model systems by femtosecond UV fluorescence spectroscopy PY 2009 PU Christian-Albrechts-Universität zu Kiel WP https://macau.uni-kiel.de/receive/diss_mods_00003671 LA en DE Femtosecond Fluorescence Spectroscopy; DNA; Nucleobases; H-bonded Base Pairs; Radiationless Electronic Deactivation; Femtosekunden-Fluoreszenz-Spektroskopie; Nukleobase; H-gebundene Basenpaare; Strahlungslose elektronische Desaktivierung AB In the present Thesis, the dynamics of key building blocks of the DNA, namely (i) free nucleobases, (ii) selected, well-defined hydrogen-bonded base pairs as well as larger H-bridged aggregates, and (iii) short single- or double-stranded DNA oligonucleotides and self-complementary DNA oligonucleotide loops have been studied in a systematic bottom-up strategy to assess their roles for the photostability of DNA. Experimental measurements were carried out by the UV femtosecond fluorescence up-conversion technique. Tunable UV pump pulses were used to monitor the excited-state decays after excitation close to the electronic origin and to significantly higher energies above. PI Kiel ER