Browsing Fakultät für Chemie (inkl. GAUSS) by Title
Now showing items 554-573 of 756
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Site-Selectivity in Ruthenium-Catalyzed C–H and C–C Activations
(2020-09-23)During the past decades, transition metal-catalyzed C–H and C–C activation has been recognized as a powerful platform in organic synthesis to access the selective construction of new C–C and C–Het bonds. The full control ... -
Size sensitive rheology of reconstituted actin and vimentin filament networks
(2025-08-29)Intermediate filament (IF) networks provide mechanical resilience to cells. Understanding their viscoelastic properties—and crucially, their dependence on the length scale of deformation—is vital for deciphering physiological ... -
Small Molecule Activation of Copper and Iron Complexes with Bis(oxazoline) Ligands
(2017-09-22)This work describes small molecule activation by copper and iron complexes with structurally and electronically modified bis(oxazoline) (BOX) ligand systems, focusing on dioxygen and nitric oxide as substrates. Dioxygen ... -
Small Molecule Activation with Dinuclear Cobalt Complexes based on the Two-In-One Pincer Ligands
(2021-06-24)Dinuclear complexes based on this two-in-one pincer ligand scaffold have exhibited fascinating magnetic properties and promise high reactivity in catalysis and small molecule activation. In this thesis, the main objective ... -
Smart RAFT-Polymer Surfaces: Exploring their Self-assembly and Dynamics on the Nanoscale
(2020-03-04)Synthetic polymers on surfaces are excellent models to mimic biological systems which are highly sophisticated in their responsive behaviour to environmental changes. To expand the application possibilities of smart polymer ... -
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 ... -
Solid Supported Model Membranes Containing Plant Glycolipids: A Tool to Study Interactions between Diatom Biomolecules and the Silicalemma in vitro
(2017-06-22)Silica biomineralization in diatoms is presumably controlled by a self-assembly of biomolecules inside membrane-enclosed silica deposition vesicles. The fine-patterned structure of the diatom’s cell wall is thereby determined ... -
Solid-state NMR characterization of Alzheimer-like tau amyloid fibrils
(2012-09-27)One of the hallmarks of Alzheimer's disease (AD) is the self-assembly of the microtubule-associated protein tau into fibers termed “paired helical filaments -
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 ... -
Spektroskopische Untersuchungen zur Kinetik und Produktbildung bei Reaktionen von zyklischen und offenkettigen Kohlenwasserstoff-Radikalen
(2006-10-25)Reactions of pure and partly oxygenated hydrocarbon radicals are of major interest in two different fields: On the one hand tailored polymerisation products are of daily use in different ... -
Spezifität der Wechselwirkung von Collybistin 2 mit Phosphatidylinositolphosphaten: Einfluss der verschiedenen Proteindomänen
(2015-05-27)Collybistin, a brain-specific GEF, is required for gephyrin clustering at the postsynaptic membrane. This is important for the correct arrangement of GABAA and glycine receptors. Binding of collybistin to a membrane is ... -
Spontaneous aggregation of fibril-forming peptides studied by Molecular Dynamics simulations
(2012-06-21)Polypeptides share the capacity to assemble into fibrillar aggregates with generic properties even though they can be otherwise unrelated in sequence or structure. Moreover, the relevance of peptide aggregation in ... -
Stereochemistry of Challenging Natural Products Studied by NMR-based Methods
(2013-02-18)Stereochemistry is a very important subject in chemistry and life sciences, as most of the biologically active molecules, including proteins, oligonucleotides, sugars, lipids and small molecules exist in one chiral form. ... -
Sternpolymere mittels RAFT-Polymerisation
(2008-05-29)The goal of the work presented was the synthesis of star polymers with a defined number of arms, narrow molecular weight distribution and high degree of polymerization from controlled radical ... -
Sticky triangles: New tools for experimental phasing of biological macromolecules
(2010-12-07)X-ray crystallography is the prime method for the elucidation of three-dimensional molecular structures. It enables the structure determination of biological macromolecules such as proteins ... -
Stoßwellenuntersuchungen und Modellierung der Pyrolyse von Pentafluorethan und 2-H-Heptafluorpropan
(2014-02-20)The pyrolysis of C2HF5 and C3HF7 have been studied in shock waves by monitoring die UV-absorption of CF2 at 248nm and temperatures in the range of 1400 - 2000 K. Ar was used as bath gas with concentrations in the range ... -
Structural analysis of organometallic deprotonation agents and computational studies on formally hypervalent molecules
(2010-10-22)The following thesis targets two topics. The first one deals with the synthesis and crystallization of reactive organometallic deprotonation agents and important metalated intermediates ... -
Structure and Mechanics of Membrane-bound Vimentin Filaments and Networks under Strain
(2022-12-16)The shape and mechanical properties of eukaryotic cells are determined by the cytoskeleton, composed of actin filaments, microtubules and intermediate filaments (IFs). Among these, IFs are considered to be the main ... -
Structure determination of peptides with antimicrobial action
(2004-07-28)Peptide antibiotics belonging to three different families were investigated using X-ray crystallography. The peptaibol antibiotics cephaibol A, B and C gave well-diffracting crystals and ... -
Structure, Dynamics and Phase Behaviors of Cationic Micellar Solutions:
(2006-12-11)In this work, the combination of Raman spectroscopy and Small Angle Neutron scattering (SANS) have been used for the first time, to understand the aggregational behavior of micelles ...