Browsing Fakultät für Chemie (inkl. GAUSS) by Advisor & Referee "Vana, Philipp Prof. Dr."
Now showing items 21-40 of 64
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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 ... -
Kinetik der radikalischen Polymerisation von Monomeren mit mesogener Seitengruppe in isotroper und anisotroper Lösung
(2018-03-19)This work targets the radical polymerization of reactive mesogens in isotropic and anisotropic solution. Kinetic coefficients were determined via pulse-laser polymerization in conjunction with size-exclusion chromatography ... -
Tuning Mesoporous Silica Structures via RAFT Polymers: From Multiblock Copolymers as new Templates to Surface Modification
(2018-03-06)In this work, new procedures to tailor mesoporous silica thin films are presented. On the one hand, linear multiblock copolymers were utilized as structure directing agents for the synthesis of mesoporous silica thin films. ... -
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 ... -
Novel synthetic approaches for fabrication of polymer brushes on gold surfaces via Raft polymerization: A new era for gold modification
(2018-02-14)Nanobiotechnology is an important branch of nanotechnology, which has been dramatically developed for creating functional nanoscale materials for various biomedical applications. The past few decades have witnessed ... -
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 ... -
Anwendungsbezogene Weiterentwicklung der abbildenden Ellipsometrie
(2017-10-10)Since the work of Geim of graphene as the first 2D material, application and rese- arch of 2D materials is the main booming branch this decade. Overall the imaging techniques like RAMAN Imaging, AFM and optical microscopy ... -
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 ... -
High-Precision Particle Arrangement in Gold‒Polymer-Nanocomposites using RAFT Polymerization
(2016-11-17)This thesis provides a comprehensive analysis of the scientific background on nanocomposites generated via reversible-deactivation radical polymerization (RDRP) techniques. Starting from this basis, nanocomposites with the ... -
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 ... -
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 ... -
Kinetik der konventionellen radikalischen und der RAFT-Polymerisation an Nanopartikeloberflächen
(2016-07-22)This thesis provides new insights into the kinetic and mechanistic aspects of the con-ventional radical and the reversible addition–fragmentation chain transfer (RAFT) polymerization from the surface of silica nanopartic ... -
Kinetik radikalischer Polymerisationen ionischer Monomere in wässriger Lösung: Spektroskopische Analyse und Modellierung
(2016-07-20)This work targets the radical polymerization of ionic monomers in aqueous solution. Rate coefficients were determined by pulse-laser polymerization in conjunction with size-exclusion chromatography (PLP–SEC), with near-infrared ... -
Radical Polymerization Kinetics of Non-Ionized and Fully-Ionized Monomers Studied by Pulsed-Laser EPR
(2016-06-29)The radical polymerization kinetics of non-ionized and fully-ionized monomers in organic and aqueous solution was investigated by SP–PLP–EPR, i.e., highly time-resolved single-pulse–pulsed-laser–polymerization (SP–PLP) in ... -
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 ... -
Kinetics and Mechanism of Cu-Catalyzed Atom Transfer Radical Polymerization
(2015-10-28)The kinetics and mechanism of Cu-mediated atom transfer radical polymerization (ATRP) were investigated with particular emphasis on the ATRP deactivation rate coefficient, k_deact . The method of pulsed laser polymerization ... -
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 ... -
Metal-Catalyzed Radical Polymerization up to High Pressure
(2015-09-28)The mechanism and kinetics of metal-catalyzed radical polymerization were investigated by spectroscopic means. A particular focus was set on Fe-mediated atom-transfer radical polymerization (ATRP) as there is a growing ...