Browsing Fakultät für Chemie (inkl. GAUSS) by Title
Now showing items 721-740 of 758
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Untersuchungen zum Einfluss von London-Dispersionswechselwirkungen auf die Molekülaggregation
(2015-06-24)The energetics and dynamics of intermolecular interactions are at the core of fundamental research in physical chemistry. Noncovalent intermolecular interactions are studied on all scales of molecular size, ranging from ... -
Untersuchungen zum Sekundärmetabolismus arktischer und antarktischer Meereisbakterien
(2002-09-04)In this work psychrophile bacteria from arctic and antarctic sea-ice were submitted to a chemical and biological screening and due to the results some were examined thoroughly for interesting ... -
Untersuchungen zum Sekundärmetabolismus mariner Pilze, Naturstoffscreening und Bioprozessoptimierung mit Hilfe eines kontinuierlichen Bioreaktors
(2004-03-18)The work in hand is divided into three parts: At first the screening of marine microorganisms with the isolation of their metabolites and the solution of the concerning structures. Furthermore ... -
Untersuchungen zur Aggregation des ALS-relevanten TDP-43(307-347)
(2022-12-12)Amyotrophic lateral sclerosis (ALS) is a fatal, multicausal, neurodegenerative disease for which there is so far no cure. Abnormal cytoplasmic aggregates of TDP-43, a multifunctional RNA-binding protein, are a pathological ... -
Untersuchungen zur Biosynthese und Aktivität ausgewählter Plecomakrolide sowie chemisches Screening von Actinomyceten
(2005-06-10)This Ph.D. thesis deals with the isolation and structure elucidation of microbial secondary metabolites and comprises studies of their biosynthesis and biological activity.The first part ... -
Untersuchungen zur Elektrokatalyse von Hochtemperatur-Polymerelektrolytmembran-Brennstoffzellen (HT-PEMFCs)
(2010-02-22)This work deals with the optimisation of the cathode composition to enhance the performance of high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs). Phosphoric acid doped ... -
Untersuchungen zur enantioselektiven Totalsynthese von Parnafungin C
(2016-10-10)Within this thesis, two fragments of the natural product Parnafungin C, a highly functionalized chiral chromane with the correct absolute and relative configuration of all stereogenic centers as well as a biaryl system ... -
Untersuchungen zur Synthese fluoreszenzaktiver aromatischer Polyzyklen durch Palladium-katalysierte Domino-C‒H-Aktivierungen
(2014-11-18)Fluorescent dyes were synthesized via novel fourfold Palladium-catalyzed domino reactions consisting of a Sonogashira reaction, two carbopalladations and a C-H-activation in one domino process. -
Untersuchungen zur Synthese und Struktur von ein- und mehrkernigen Komplexen der Mnzmetalle mit Chelatliganden
(2001-11-07)Not available. -
Untersuchungen zur Synthese von Yohimban- und Campthoteca-Alkaloiden durch Domino-Knoevenagel-Hetero-Diels-Alder-Reaktion
(2007-11-01)In this context, the domino reactions proved to be an excellent tool to access complex molecules from simple substrates in environmentally and economically sustainable way. This ... -
Untersuchungen zur Wirkstoffproduktion extremophiler Mikroorganismen sowie Biosynthese und Derivatisierung ausgewählter mikrobieller Naturstoffe
(2009-07-23)The present work deals with the isolation, characterization and chemical derivatization of natural products from extremophilic microorganisms and streptomycetes. In order to ... -
Unusual Sesquiterpenes: Gorgonenes and Further Bioactive Secondary Metabolites Derived from Marine and Terrestrial Bacteria.
(2009-03-16)An increasing number of infectious diseases is still not curable as many organisms are showing antibiotic resistance which urges the development of new medicaments to combat them. Natural ... -
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 ...