Browsing Fakultät für Chemie (inkl. GAUSS) by Referee "Schwarzer, Dirk Prof. Dr."
Now showing items 21-37 of 37
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Generation of H-Atom Pulses and Associative Desorption of Hydrogen Isotopologues from Metal Surfaces
(2018-03-28)Part I of this work introduces a technique for the generation of H-atom pulses with unprecedented time resolution. In part II an extensive study of the associative desorption reaction of hydrogen isotopologues from metal ... -
From diatomic to polyatomic quantum-state-resolved molecule-surface scattering
(2017-10-10)In this work, molecule-surface scattering is studied for the diatomic molecule nitric oxide (NO) and the polyatomic molecule formaldehyde. Following the approach of “molecular surface science”, elementary steps in the ... -
Molecular Beam Scattering from Ultrathin Metallic Films
(2017-07-28)One of the goals of studying molecule-surface interactions is to understand the details of the chemical reactivity at surfaces. The exchange of energy between a gas and a solid is a complex sequence of events even when ... -
Dynamics of Hydrogen Atoms Scattering from Surfaces
(2017-01-06)Hydrogen atoms interactions with single crystal surfaces are the simplest processes in surface science, which are of both practical and fundamental interest. Chemical reactions of hydrogen atoms with single crystal surfaces ... -
Theoretical Description of Hydrogen Atom Scattering off Noble Metals
(2016-07-01)I have constructed a full-dimensional potential energy surface (PES) for a H atom interacting with a Au(111) surface by fitting the analytic form of the Effective Medium Theory to density functional theory (DFT) energies. ... -
Orientation-dependent energy transfer in gas-surface collisions: Scattering of vibrationally excited nitric oxide from Au(111)
(2015-07-14)The work in my thesis is a contribution to the field of chemical dynamics at surfaces. In this field we seek to develop a detailed microscopic understanding of chemical events taking place on surfaces. Progress in ...
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Electron Emission from Metastable Carbon Monoxide Molecules at Adsorbate Covered Au(111) Surfaces
(2015-07-09)Understanding the fundamentals of energy transfer between molecules and surfaces is of profound importance in modern chemistry. Here, I investigate an important energy transfer process, electron ... -
Lichtinduzierte Primärprozesse in reversibel photoschaltbaren fluoreszierenden Proteinen: Zeitaufgelöste Spektroskopie von Padron0.9 und rsFastLime
(2015-05-18)Within this project, the photodynamics of the reversibly switchable fluorescent proteins Padron0.9 and rsFastLime after photoexcitation were investigated. Cis/trans-isomerization of the chromophore is an essential element ... -
Quantum-state specific scattering of molecules from surfaces
(2014-10-15)In my work, I investigated the quantum-state resolved scattering of three different diatomic molecules (NO, CO, N2) from different surfaces, including Au(111) and Pt(111). I focused on measurements of the energy ... -
Experimentelle und theoretische Untersuchungen der Dissoziationen von Tetrafluorethen, Hexafluorpropen und Hexafluorcyclopropan
(2014-07-17)The thermal dissociation reactions of C2F4, C3F6 and c-C3F6 were studied in shock waves monitoring CF2 radicals by their UV absorption.
C2F4: The absorption coefficients as functions of wavelength and temperature ... -
S2 State Photodissociation of Diphenylcyclopropenone, Vibrational Energy Transfer along Aliphatic Chains, and Energy Calculations of Noble Gas-Halide Clusters
(2014-06-10)In this work, three major topics are investigated. The decarbonylation of diphenylcyclopropenone from its second excited electronic state forms the first part. This reaction was investigated using pump laser pulses of ... -
Soft Landing of Size Selected Nanoparticles Produced by Magnetron Sputtering
(2012-11-28)In the first part, the photodissociation dynamics of methyl azide are probed by photofragment translational spectroscopy at 248 nm and 193 nm dissociation wavelengths under collision-free conditions. At 248 nm, the only ... -
Femtosekunden Photodetachment- Photoelektronenspektroskopie an isolierten und massenselektierten Halogen-Edelgas-Clustern
(2010-11-22)This thesis is dedicated to the study of the energetics and dynamics of the solvation process in van-der-Waals bonded halogen rare gas clusters. To this end a high repetitive electron-/mass ... -
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 ... -
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 ... -
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 ...