Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Troe, Jürgen Prof. Dr."
Now showing items 21-40 of 41
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Live Cell STED Microscopy using Genetically Encoded Markers
(2009-08-05)Far-field fluorescence microscopy is a tool of outstanding importance in the biological sciences, due to its non-invasiveness especially for the investigation of living cells, tissue and ... -
Pressure and temperature dependence of recombination reactions of benzyl-type radicals
(2009-02-18)The combination reactions p-F-C6H4CH2 + p-F-C6H4CH2 (+M) → C14H12F2 +M), p-CH3-C6H4CH2 + p-CH3-C6H4CH2 (+M) → C16H18 (+M) and C6H5CH2 + C6H5CH2 (+M) → C14H14 (+M) have been investigated ... -
Photodissoziation von Polyhalogenmethanen in Fluiden: Kurzzeitdynamik und Mechanismen
(2008-09-19)This work investigates the molecular mechanisms of photoinduced dynamics and isomerization of polyhalomethanes in fluids by femtosecond pump-probe absorption spectroscopy. For this purpose ... -
Femtosekunden-Photoelektronenspektroskopie mit extrem ultravioletter Strahlung an Flüssigkeitsgrenzflächen
(2007-11-12)In this work time-resolved photoelectron spectroscopy with femtosecond laser pulses in the extrem ultraviolett has been applied to liquid interfaces for the first time. Thereby laser induced ... -
Kinetik und Dynamik bei tiefen Temperaturen in Lavaldüsenexpansionen
(2007-06-27)This thesis presents investigations concernig reactions of the hydroxyl radical (OH) with the reagents acetylene, ethene, benzene, ethylester of alanine and N,N-dimethylformamide in the temperature range between 60K - 300K. ... -
Probing vesicle dynamics within small synapses
(2006-01-27)Sustained synaptic transmission at the hippocampal synapse (Ø∼1 μm) requires continuous exocytosis and subsequent endocytosis of synaptic vesicles (Ø∼35 nm). The kinetics of this process ... -
Photolytischer Käfigeffekt von Dihalomethanen in überkritischen Lösungsmitteln
(2005-12-05)This thesis deals with the effects that a dense environment may have on chemical reactions. For this purpose a seemingly simple reaction was chosen: the photodissociation of diiodomethane ... -
Zeitaufgelöste Fluoreszenzspektroskopie unimolekularer Reaktionen im Überschalldüsenstrahl: <i>trans-cis</i>-Photoisomerisierung, Phenylringtorsion, intramolekularer Wasserstoffatomtransfer
(2005-11-02)In this work three types of unimolecular reactions were studied spectroscopically and theoretically with model systems: (1) the trans-cis-photoisomerization of trans-stilbene and its ... -
Aufbau einer HPLC-UV-ESI-MS/MS-Datenbank und ihre Anwendung im Screening arktischer und antarktischer Meeresbakterien
(2005-10-21)Microorganisms from uncommon habitats are an attractive source for chemically and biologically outstanding natural compounds, for the interaction between different species in complex living ... -
Untersuchung der Reaktion von Wasserstoffatomen mit Sauerstoffmolekülen (H+O2+M → HO2+M) in weiten Druck- und Temperaturbereichen
(2004-07-20)In this work the pressure and temperature dependence of the combination reaction of hydrogen atoms with oxygen moleculesIn the experiments, the rate constants were measured at various ... -
Kinetik der Reaktionen des Hydroxylradikals mit ungesättigten Kohlenwasserstoffen in einer Lavaldüsenexpansion
(2004-04-06)The investigation of hydroxyl radical reactions with unsaturated hydrocarbons like ethyne, ethylene, propene and isoprene at low temperatures plays a significant role for the understanding ... -
Femtosekunden Photolyse von Diiodmethan in überkritischen Fluiden: Konkurrenz zwischen Photodissoziation und Photoisomerisierung
(2004-01-14)This thesis deals with effects that a dense fluid environment may have on the dynamics of elementary reactions such as competition between reactant escape from a solvent cage and in-cage ... -
Solvatationsdynamik an biologischen Grenzschichten
(2003-12-10)The thesis focuses on the solvation dynamics at the interfaces of two representative biological model systems. A synthetic phospholipid membrane interface serves as a model for biological ... -
Femtosekunden-Spektroskopie zur Protontransfer-Dynamik im elektronisch angeregten Zustand von 1.8-Dihydroxy-9.10-Anthrachinon
(2003-10-17)This thesis investigates the connection between the non-radiative relaxation dynamics of 1.8-dihydroxy-9.10-anthraquinone (1.8-DHAQ) and the intramolecular proton-transfer in the first ... -
Ultraschnelle, lichtinduzierte Primärprozesse im elektronisch angeregten Zustand des Grün Fluoreszierenden Proteins (GFP)
(2003-02-11)The photophysical processes of Green Fluorescent Protein (GFP) were studied by femtosecond time- and frequency-resolved as well as time-correlated single photon counting (TCSPC) experiments. ... -
Molecular mechanisms of AMPA and kainate receptor gating and its implication in synaptic transmission
(2002-11-25)In this work we have studied the biophysical properties of AMPA and kainate receptors, which are found mainly in central synapses. AMPA receptors are thought to be tetrameric in nature. The ... -
Cyclisierungsreaktionen mehrfach ungesättigter Systeme - Theorie und Experiment
(2002-07-29)This work brings some order to the great variety of the "cyclizations of polyunsaturated systems". In a first theoretical part, it is shown by means of computational chemistry that a big ... -
Brewsterwinkel-Mikroskopie zur Untersuchung der Kristallisation von Calciumcarbonaten an Modell-Monofilmen an der Grenzfläche Wasser/Luft
(2002-07-17)The remarkable structural diversity and mechanical strength of mineral phases associated with living organism (biominerals) has prompted substantial effort towards synthetically ... -
Photon-Echo-Spektroskopie zur Dynamik der Solvatation in Wasser und an Lipidmembran-Wasser-Grenzschichten
(2002-07-02)The thesis focuses on the molecular mechanisms of ultrafast solvation at the interface of synthetic phospholipid-membranes. For the first time, photon-echo spectroscopy is used as a tool ... -
Stoßwellenuntersuchungen zur Kinetik und Druckabhängigkeit der Wasserstoffperoxidpyrolyse mittels Laser-Absorptions-Spektroskopie
(2002-07-02)The thermal decomposition of hydrogen peroxide and its secondary reactions was investigated in shock wave studies over a temperature range relevant for combustion. Based on a mode locked Titanium:sapphire laser a new laser ...