Browsing Fakultät für Chemie (inkl. GAUSS) by Title
Now showing items 462-481 of 758
-
Photoionization and vibrational spectroscopy of sodium doped water clusters
(2019-04-15)In this work sodium doped water clusters are studied by means of photoionization reflectron time-of-flight mass spectrometry. Addition of an laser pulse of infrared radiation to the photoionization laser pulse sequence ... -
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 ... -
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 ... -
Plasmagestützte Syntheseverfahren zur Erzeugung von Parylene-Metall-Multilayersystemen
(2023-10-27)This dissertation comprises the investigation of new synthesis possibilities of Parylene-metal multilayer systems with all process steps united in a single Parylene coating device. For this purpose, the metal layer component ... -
Polybutadien und Butadien enthaltende Copolymere mit gezielt eingebauten vulkanisierbaren Gruppen durch RAFT-Polymerisation
(2014-04-29)Reversible Addition Fragmentation Chain Transfer (RAFT) polymerisation is a radical polymerisation based on the principle of degenerative chain transfer. Polymers produced by this method feature a narrow polydispersity and ... -
Polybutadien und Butadien enthaltende Copolymere mit kontrollierter Kettenstruktur mittels RAFT-Polymerisation
(2012-05-24)Reversible addition-fragmentation chain transfer (RAFT) polymerization has received great scientific and industrial attention, due to its versatility in producing well-defined complex macromolecular architectures with ... -
Polyimido Sulfur Compounds as Promising Ligands in Molecular Magnets
(2022-04-08)Single-molecule magnets (SMMs) are molecules that exhibit slow relaxation of the magnetization after the removal of an applied external field. Therefore, they may find potential application in high density information ... -
Polymer embedding for ultrathin slicing and optical nanoscopy of thick fluorescent samples
(2010-01-05)Optical far-field methods are frequently recruited in modern life sciences, especially because one can benefit from various kinds of specific labeling. This was forced even more when several ... -
Polynukleare Cluster der d-Metalle mit chelatisierenden Liganden
(2005-05-27)This thesis describes the syntheses of polynuclear clusters of d-block-elements with chelating ligands. The used ligands where 2-(Bis(diphenyldithiophosphin))methyl-pyridin ... -
Post-Synthetic DNA-Functionalization Based on DNA-Templated Dynamic Chemistry
(2015-06-26)With the growing field of DNA technology there is an increasing demand for new modifications of DNA, which improve its versatility and promote the DNA as a fundamental scaffold for a wide field of applications like catalysis, ... -
Potentiell photochrome brückenkopfsubstituierte Furo[2,3-d]furane
(2002-04-08)Within the scope of this thesis a photochromic system consisting of furo[2,3-d]furans and bis-quinonemethides was investigated. In the literature the known compounds of this system are ... -
Practical approaches to macromolecular X-ray structure determination
(2011-11-21)The X-ray structure determination of macromolecules is unsurpassed in precision and detail. However, such structures cannot be derived directly from X-ray diffraction data. Phases and a ... -
Prebiotic Synthesis of Inorganic Pyrophosphate (PPi) Driven by a Geochemical Redox Reaction
(2021-10-21)In all extant organisms adenosine triphosphate (ATP) is the energy carrier and transmitter of free energy from exergonic to endergonic processes. Since ATP is a complex molecule, it was unlikely available on prebiotic ... -
Precise Nanoengineering of Polymer Functionalized Nanomaterials with Silica as Coating and Templating Tools
(2022-05-10)The construction of a well-defined hybrid nanostructure becomes possible if functional polymer meets inorganic nanomaterials in a well-designed way. To fully control the structure of the nanohybrid and create the synergy ... -
Predictive in silico models for competing reaction mechanisms
(2025-09-08)Reactivity is one of the most fundamental concepts in chemistry, determining if a chemical transformation is taking place, its elementary steps and how fast it is. Due to the exponential dependence of the rate constant on ... -
Preorganization within a pyrazolato-bridged bis-β-diketiminato dinickel frame as a key tool to access terminal sulfides and synergistically stabilized intermediates for acetyl-CoA synthase mimetic thioester formation
(2025-05-21)Bimetallic complexes are frequently employed in natural enzymes and in applications such as imaging, targeting, and catalysis, in order to exploit the synergy between two metal centers or to combine different functionali ... -
Preorganized Bimetallic Nickel Complexes of Pyrazolate-Bridged Ligands for Cooperative Substrate Transformation
(2017-05-10)This thesis focuses on square-planar, pyrazolate-bridged dinuclear platforms to investigate their reactivity towards small molecules. In the scope of this work two ligands were prepared: a pyrrole-pyrazole based (H3Lpyr) ... -
Preparation and Reactions of Compounds with Heavier Group 14 Elements in Low Oxidation States
(2011-01-27)Facile synthesis of chlorosilylene (PhC(NtBu)2SiCl) in 90% yield was reported using LiN(TMS)2 as a dehydrochlorinating agent and its versatile reactivity with various organic substrates was ... -
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 ... -
Probing Molecule-Surface Interactions through Thermal Desorption Rates
(2022-01-13)The accurate description of chemical reaction rates at surfaces is essential for the understanding of heterogeneous catalysis. As industrial catalysts are in general complex, fundamental understanding on how they work ...