Browsing Fakultät für Chemie (inkl. GAUSS) by Referee "Vana, Philipp Prof. Dr."
Now showing items 1-20 of 57
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Kinetics of free radical homo- and copolymerisations investigated with pulsed laser methods
(2024-03-06)Free-radical polymerisation is the most important polymerisation process due to its simplicity and robustness. It is therefore necessary to understand the kinetics of the involved reactions in order to plan a polymerisation, ... -
Barriers of Protonation Reactions of Organometallics
(2023-09-20)Protonation reactions are entirely understood for simple organic and inorganic molecules and there are elaborated concepts to describe such acid-base reactions in both the solution and gas phase. For organometallic species, ... -
Electrospray-Ionization Mass Spectrometry for the Analysis and Quantification of Carbanions
(2023-03-23)The suitability of ESI-MS for the analysis of carbanions was investigated, including the effects of their basicity, concentration and the experimental conditions. This was followed by exemplary applications, such as live ... -
Aggregations- und Evaporationsdynamik von Clustern und Aerosolpartikeln im H<sub>2</sub>SO<sub>4</sub>-H<sub>2</sub>O-System
(2022-11-28)Sulfuric acid and water are two key compounds in the formation of atmospheric aerosols and are therefore relevant in the context of climate research. In this work, a modified experimental setup is presented, using the ... -
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 ... -
Herstellung und Charakterisierung von Polymernetzwerken im Kontext der präparativen Membranchromatographie
(2022-03-04)Preparative chromatography is an essential part in the industrial purification of biopharmaceuticals and thus allows the targeted therapy of severe diseases like cancer, multiple sclerosis or rheumatism. It enables the ... -
Fabrication of Polymer-Metal Nanohybrids - Routes Towards Functional Materials
(2021-11-15)Within this thesis various nanohybrid systems constructed from metal nanocrystal cores and polymer shells were specifically tailored towards distinct practical applications. The first part of this work addresses the ... -
Termination Kinetics of Radical Homo- and Copolymerizations Studied via Time-Resolved EPR Spectroscopy
(2021-06-01)This thesis provides an in-depth investigation into the chain-length dependent termination kinetics of radical homo- and copolymerization by using the most powerful method: single pulse–pulsed laser polymerization (SP–PLP) ... -
Charakterisierung maßgeschneiderter makromolekularer Systeme: Analyse von photoschaltbaren Polymeren und Untersuchung der Wärmeleitfähigkeit von Polymeren und Polymernanokompositen
(2021-04-23)In this work, tailored azobenzene-based polymers were synthesized and characterized with respect to their isomerization kinetics, micro structure and thermal conductivity. Additionally, the thermal conductivity of ... -
Ion mobility mass spectrometry as a powerful tool to analyze complex macromolecular systems
(2021-02-01)Modern applications of polymers rely on intricately tailored macromolecules exhibiting very specific properties and therefore require extensive analysis. In this context, IMMS is an immensely powerful technique since it ... -
Tailoring the Mechanical Properties of Montmorillonite-Nanocomposites via Surface-Bound RAFT-Polymer
(2021-01-19)The successful preparation of Montmorillonite--polymer-nanocomposites with tailorable mechanical properties via surface grafting of RAFT polymers was presented. Strategies to precisely tune the properties of filler--matrix ... -
Binary Planet–Satellite Nanostructure Using RAFT Polymer
(2020-08-06)This thesis provides a series of strategies to fabricate hierarchically arranged nanohybrids from distinct nanoparticles using polymer linkers. Benefit from the controlled reversible-deactivation radical polymerization ... -
Investigation of Polymer-Filler Interactions Using Functionalized Nanoparticles
(2020-03-16)Silica and carbon black (CB) particles were successfully functionalized by exploiting the characteristic features of the reversible addition--fragmentation chain transfer (RAFT) polymerization. This enabled both the ... -
Hitzeinduzierte Radikalbildung während der thermischen Holzmodifizierung
(2020-03-10)In this thesis the hardwood and the softwood were thermally modified to investigate the effect of heat on the chemical structure of the wood and the heat induced radical formation during wood modification. Different ... -
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 ... -
Advanced Functionalization of Polyethylene via Catalyzed Chain Growth: Tailored Surfaces and Cationic End-Groups
(2019-03-26)Well-defined, end-functional polyethylene (PE) was synthesized in a catalyzed chain growth (CCG) polymerization and applied in novel synthetic routes for PE modified surfaces as well as in the manufacturing of multifunctional ... -
Matrix gestützte Polymernetzwerke für die Anwendung in der konvektiven präparativen Chromatographie
(2019-01-11)Due to developments in the production of biopharmaceuticals and the increasing demand, due to increased application areas, especially for the use of monoclonal antibodies (mAb's), the downstream of these products have ... -
Low-Voltage Electrowetting on Dielectrics Integrated and Investigated with Electrical Impedance Spectroscopy (LV-EWOD-EIS)
(2018-10-18)Electrowetting on dielectrics (EWOD) is an electrically controllable wetting effect, that has been applied in diverse fields including optics, displays and lab on a chip systems. However, the further development of EWOD ... -
Modification of Wood Surfaces via controlled Polymerization Methods
(2018-10-08)The present study was conducted to explore the possibilities of wood modification by reversible-deactivation radical polymerization (RDRP) techniques in order to tailor surface properties. Surface-initiated reversible ... -
Bimetallic Complexes for Cooperative Polymerization Catalysis
(2018-09-07)This work contributed to the understanding of cooperativity in bi- and oligometallic complexes through three chapters. The first chapter on CO2/epoxide copolymerization led to the discovery of several promising novel ...