Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Vana, Philipp Prof. Dr."

Mikrophasenseparation von photo-vernetzbaren Blockcopolymeren in dünnen Filmen

Tietz, Katharina (2015-03-23)

The micro-phase behavior of diblock copolymers with integrated UV-crosslinkable units has been investigated by atomic force microscopy (AFM) as well as their mechanical properties. Further, the influence of crosslinkers ...

Pfropfung funktioneller Monomere auf Polymermembranen

Sölter, Björn Malte (2015-02-18)

The grafting of glycidyl methacrylate (GMA) on microporous cellulose membranes using ceriumIV was investigated. The grafted polymer was sulfonated to be used for ion exchange. It was shown that during the grafting of GMA ...

Mechanism and Kinetics of Catalyzed Chain Growth

Primpke, Sebastian (2015-02-05)

In this work, the activation and polymerization mechanism of Catalyzed Chain Growth (CCG) polymerization of ethylene and styrene was studied. On the basis of two metallocene catalysts (Cp*2ZrCl2 and Cp*2NdCl2Li(OEt2)2) and ...

Bioinspirierte Titin-analoge Polymere

Schütz, Jan-Hendrik (2014-11-21)

Bioinspired polymers imitating the multiple domain structure of the muscular protein Titin on the basis of hydrogen bond bearing cyclic precursor polymers have been synthezised and their mechanical properties have been ...

Binuclear late transition metal complexes with pyrazole based compartmental ligands: Scaffolds for cooperative organometallic transformations

Ainooson, Michael Kojo (2014-10-10)

A series of pyrazolate based ligands with 3,5-substituted side arms on the heterocycle have been established as valuable synthons for the preparation of highly compartmentalized bi- and oligonuclear metal complexes. Homo- ...

Der Einfluss der UV-initiierten RAFT-Polymerisation auf die Strukturen und Eigenschaften von Polymernetzwerken

Henkel, Rouven Christoph (2014-09-26)

In this work the influence of the Reversible Addition-Fragmentation chain Transfer (RAFT)-polymerization on the microstructures and the resulting properties of polymer networks was investigated. Elastomeric, statistical ...

Synthese chiraler Alignmentmedien zur Enantiomerenunterscheidung via anisotroper NMR-Parameter & Bestimmung der absoluten Konfiguration von (–)-erythro-Mefloquin HCl

Schmidt, Manuel (2014-08-12)

During this PhD project it was presented a new chiral alignment medium for the enantiodiscrimination of chiral amines. Initially (R)- or (S)-2-acrylamido-2-phenylethane sulfonic acid, respectively ((R)- / (S)-APhES), the ...

Dynamics of soft interfaces in droplet-based microfluidics

Brosseau, Quentin (2014-04-30)

This doctoral thesis presents the study of di erent dynamic processes occurring at the droplet interface, and the methods implemented for their study. The objective of this work is to unravel what are the important properties ...

Polybutadien und Butadien enthaltende Copolymere mit gezielt eingebauten vulkanisierbaren Gruppen durch RAFT-Polymerisation

Conrad, Cathrin Sonja (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 ...

Wetting heterogeneities in porous media

Murison, Julie Lynette (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 ...

Optical Fusion Assay Based on Membrane-Coated Beads in a 2D Assembly

Bao, Chunxiao (2014-04-25)

A novel assay of membrane fusion is established based on membrane-coated beads in a 2D assembly. This assay allows identifying the different stages of the fusion process. Membrane fusion driven by heterodimeric coiled coil ...

Kinetics and Modeling of the Radical Polymerization of Acrylic Acid and of Methacrylic Acid in Aqueous Solution

Wittenberg, Nils Friedrich Gunter (2014-01-15)

The radical polymerization of methacrylic acid, acrylic acid and acrylamide in aqueous solution has been investigated. Detailed kinetic models for both acrylic acid, AA, and methacrylic acid, MAA, have been developed ...

Water Soluble Photochromic Fluorescent Nanoprobes based on Diheteroarylethenes and Polymer Coated Quantum Dots

Díaz, Sebastián Andrés (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 ...

Advanced NMR Methodology for the Investigation of Organometallic Compounds in Solution

Pöppler, Ann-Christin (2013-11-06)

The scope of this thesis was to investigate organometallic compounds by advanced solution state NMR methods in order to build a bridge from known solid state structures to their behaviour in solution. Since these reagents ...

Synthese und Untersuchung von Derivaten des Azobenzols mit Silananker zur Darstellung photoschaltbarer Oberflächen

Möller, Stephanie (2013-07-09)

The aim of this work is the synthesis of derivatives of azobenzene with silane anchor to form photoswitchable surfaces. This is an approach to create photoswitchable surfaces in a single-step reaction to functionalize ...

Investigations into the Propagation and Termination Kinetics of the Radical Polymerization of Polar Monomers in Aqueous Solution

Schrooten, Jens (2013-05-27)

Propagation and termination rate coefficients of radical polymerizations in aqueous solution were determined from pulsed-laser induced polymerizations and chemically initiated polymerizations. Pulsed-laser induced ...