Dokumente Fakultät für Chemie (inkl. GAUSS) nach Titel
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Verbindungen von Molybdän und Wolfram in den Oxidationsstufen IV - VI als Modelle für Molybdän- und Wolfram-Cofaktoren
(2011-01-27)This thesis includes the synthesis of model compounds for molybdenum- and tungsten cofactors. Comparative studies of the pairs were done to show similarities and differences. Especially the ... -
Verknüpfung zwischen Plasmamembran und Zytoskelett
(2016-09-22)The dynamic linkage between the plasma membrane and the underlying cytoskeleton of the cell is fundamental for cellular processes like cell morphogenesis, cell motility and cell adhesion. Ezrin as a member of the ERM ... -
Versuche zur Erzeugung des Pentacyclopropylcyclopentadienyl-Kations, und Synthese von Cyclopropylierten Oligoenen, Carbo- und Heterocyclen
(2004-12-27)The objective of this dissertation on the one hand was to generate the pentacyclopropylcyclopentadienyl cation under stable cation conditions and its characterization by low-temperature ... -
VERSUCHE ZUR SYNTHESE VON PROTOILLUDAN-SESQUITERPENEN ÜBER UMLAGERUNGSREAKTIONEN: (±)-CERAPICOL, (±)-STERPUREN UND (±)-CERATOPICANOL
(2002-12-19)The protoilludane-sesquiterpene family shows a large number of structural varities. It originates from the protoilludyl-cation 4, which was formed by the cyclization of humulene. The majority ... -
Vibrational dynamics of formic acid and its dimer: FTIR and Raman jet spectroscopy and theory
(2022-12-07)The vibrational spectroscopy of formic acid and its dimer (including deuterated isotopologues) is investigated using Raman and FTIR jet spectroscopy. The vibrational spectroscopic record of monomeric formic acid is reviewed, ... -
Vibrational Energy Transfer Between CO Molecules on a NaCl(100) Surface Studied by Infrared Fluorescence Spectroscopy
(2021-04-19)The breaking of chemical bonds in surface reactions is inherently connected to highly excited molecular vibrations. Therefore, understanding the vibrational energy transfer dynamics of adsorbed molecules, which effectively ... -
Vibrational Frequencies of Molecular Systems using High Dimensional Neural Network Potentials
(2023-05-08)Computational Chemistry is an important field in chemistry which looks for solu- tions for several questions such as reaction mechanisms, design of experiments and understanding fundamental properties of molecules. For ... -
Visible Light-Mediated Metal-Free Photocatalytic Oxidative Reactions and Cycloadditions
(2020-11-16)Currently, there is a strong demand for the development of sustainable chemistry by reducing hazardous substances and using less energy during the process. Hence, ‘Green Chemistry’ or ‘Sustainable Chemistry’ has become the ... -
Das vollständige HIV-1 Tat Protein überquert Lipidmembranen? Einfluss des positiven Ladungsclusters und des N-terminalen Bereichs
(2011-10-10)HIV-1 Tat belongs to the accessory proteins of HIV and has regulatory functions during the transcription of the viral RNA. Tat is concentrated in the nucleus and nucleolus of infected cells. ... -
Vorhersage von Proteinflexibilität aus geometrischen Zwangsbedingungen
(2008-05-09)Proteins are macromolecules that participate in all cellular processes in every living organism. They catalyze chemical reactions, serve as storage or transport system, function as molecular motors, recognize signals ... -
Water Soluble Photochromic Fluorescent Nanoprobes based on Diheteroarylethenes and Polymer Coated Quantum Dots
(2013-12-20)The rapidly growing field of fluorescence microscopy is dependent on the introduction of new, versatile probes. Quantum dots (QDs) are of great interest due to their brightness, fatigue resistance, large extinction ... -
Weak Hydrogen Bonds to Molecular Nitrogen and Oxygen as Experimental Benchmarks for Quantum Chemistry
(2019-03-22)Small molecular complexes in the gas phase weakly bound by hydrogen bonds to molecular nitrogen and oxygen are studied by vibrational and rotational spectroscopy. The obtained experimental data are used as benchmarks for ... -
Weiterentwicklung diffusionsspektroskopischer NMR-Methoden für metallorganische Schlüsselverbindungen
(2023-10-02)This work has extended the development and application of NMR diffusion spectroscopic techniques for the determination of the molecular weight of compounds in solution. In the process, methylcyclohexane-d14 was added to ... -
Wetting heterogeneities in porous media
(2014-04-28)Multiphase flow in porous media is an important process for many technical and environmental applications such as fuel cells, oil recovery, CO2 storage among others. Understanding the rules that govern these flows is ... -
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 ... -
Zeitaufgelöste inelastische Neutronenstreuung an entmischenden Silber-Natriumchlorid-Einkristallen
(2002-11-20)The kinetic of decomposition in silver sodium chloride single crystals has been studied by means of the evolution of phonon spectra. In the early stages of decomposition a spinodal ... -
Die Zirconiumalkoxid-katalysierte Aldol-Tishchenko-Reaktion von Keton-Aldolen
(2005-05-18)In the first part of the current thesis the aldol-Tishchenko reaction of ketone aldols as enol equivalents has been developed as an efficient strategy to furnish differentiated 1,3-anti ... -
Zugang zu Agrar- & Pharmawirkstoffen durch organische Synthese
(2015-07-30)This thesis contains the design of new spinosyn analogues via two subsequent heck reactions as well as the modification of a beta-selective glycoslylation method and the synthesis of six new potential Hsp47 inhibitors based ... -
Zur Biosynthese des Borrelidins sowie Isolierung und Strukturaufklärung von Sekundärmetaboliten aus marinen und terrestrischen Mikroorganismen
(2007-11-06)The relevance of natural products in pharmacological research is now after a long period again gaining more and more attention. Different aspects of natural product research are covered by ... -
Zur sequentiellen Umwandlung von Bicyclobutylidenen in Bicyclooctene: Synthese und Umlagerung funktionalisierter Spiro[3.4]octane
(2001-08-07)This dissertation deals with the synthetic potential of sequential transformation of bicyclobutylidene derivatives to bicyclo[3.3.0]octenes. For that reason bicyclobutylidene is first ...