Browsing Fakultät für Chemie (inkl. GAUSS) by Referee "Vana, Philipp Prof. Dr."
Now showing items 1-20 of 56
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Adaptive Aggregation and Chirality Recognition of Neuroactive Substances and their Building Blocks: A Vibrational Spectroscopic and Microscopic Study
(2012-07-24)A sublimation cell for the Fourier transform infrared (FTIR) microspectroscopic characterization of microcrystals was constructed and tested on methyl mandelate and mandelic acid. Spectral assignments and the determination ... -
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 ... -
Advanced NMR Methodology for the Investigation of Organometallic Compounds in Solution
(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 ... -
Advances in chain-growth control and analysis of polymer: boosting iodine-mediated polymerizations and mastering band-broadening effects in size-exclusion chromatography
(2015-10-23)In the present thesis, various novel iodine-mediated reversible-deactivation radical polymerization (RDRP) techniques were investigated. In addition, effects of instrumental band broadening (BB) in size-exclusion chromatography ... -
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 ... -
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, ... -
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 ... -
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 ... -
Binuclear late transition metal complexes with pyrazole based compartmental ligands: Scaffolds for cooperative organometallic transformations
(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- ... -
Bioinspirierte Titin-analoge Polymere
(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 ... -
Biomimetic Polymer Systems via RAFT Polymerization - Routes to High-Performance Materials
(2016-12-13)Nature provides numerous examples of structural materials with outstanding mechanical properties. An especially intriguing material is spider dragline silk that outmatches man-made high-performance fibers such as Kevlar ... -
Characterization of Physical and Chemical Properties of Synthetic Polymer using Ion Mobility-Mass Spectrometry
(2017-12-13)This thesis focuses on developing analytical methodologies based on ion mobility-mass spectrometry (IM-MS) for both physical and chemical properties of synthetic polymer. Beyond numerical experimental data, a comprehensive ... -
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 ... -
Conformational spectroscopy of flexible chain molecules near the folding limit
(2018-02-22)The highly competitive conformational landscapes of flexible chain molecules are a difficult challenge even for modern quantum chemistry as several delicate effects, partially counterbalancing each other, play an important ... -
Cu- and Fe-mediated Atom-Transfer Radical Polymerization in Aqueous Solution
(2016-08-01)The mechanism and the kinetics of metal-catalyzed radical polymerization were investigated by spectroscopic methods and by PREDICI® simulation. A particular focus was on Cu- and Fe-mediated atom-transfer radical polymerization ... -
Designstrategien für photoschaltbare Polymer-Nanokomposite
(2016-11-17)Silica and gold nanoparticles were functionalized with a developed photo responsive polymer in order to construct tailored self-assembled architectures from polymer nanocopmosites. Silica surfaces were functionalized with ... -
Der Einfluss der UV-initiierten RAFT-Polymerisation auf die Strukturen und Eigenschaften von Polymernetzwerken
(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 ... -
Der Einfluss von Defekten auf das Schaltverhalten ferroelektrisch modulierter Substanzen
(2016-04-26)The influence of defects on the phase transition behavior of A2BX4-compounds was studied by diffraction methods, impedance spectroscopy and atomic force microscopy. It was found that chemical point defects have a strong ... -
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 ... -
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 ...