13 documents found

Dissertation
CC BY 4.0
2020

From the inside out : colloidal CdSe/CdS semiconductor nanorods : a study on t ...

The main focus of this thesis was the preparation of using nanorods (NRs) as photosensitizers, and divided into three chapters, where the structure of CdSe/CdS NRs, the phase transfer of CdSe/CdS dot-in-rod NRs and the interactions between dot-in-rod NRs and dopamine / polydopamine were discussed. Larger...
Dissertation
CC BY 4.0
2020

The IAGOS-Core Greenhouse Gas package : a CO2, CH4, CO and H2O measurement sys ...

Reliable measurement systems are the basis for investigating the temporal and spatial atmospheric distribution of the most significant greenhouse gases and for understanding their budgets, trends and connection to global climate change. Within the framework of the IAGOS project (In-service Aircraft for...
Dissertation
CC BY-NC-ND 3.0
2019

Synthese, Charakterisierung und Untersuchungen zur Reaktivität von Amidinaten,...

Die Deprotonierungsreaktionen von zwei- (X = CH) und dreizähnigen (X = N) 1,3-azaallylischen Amidinen, Formamidinen und Triazenen mit Erdalkalimetallbasen führen zu Metallkomplexen unterschiedlicher Koordinationsmuster (homo-, heteroleptisch), Bindungsmodi (bi-, tridentat) und Konfigurationen der monoanionischen...
Dissertation
All rights reserved
2019

Light-induced release of nitric oxide and carbon monoxide from metal complexes

The present thesis focuses on the light-responsive nitric oxide releasing molecules (NORMs) and carbon monoxide releasing molecules (CORMs) based on transition metal ruthenium (Ru) and manganese (Mn) complexes. A general introduction and brief development of NORMs and CORMs are given in the first chapter....
Dissertation
CC BY-NC-ND 3.0
2019

Chemical and biological investigations of cytotoxic metal complexes

In summary, this works presents new metal(II) complexes with promising cytotoxic activity against Cisplatin resistant cell lines by following a different mechanism of action and showing higher cancer selectivity in vitro. To conclude, it was shown that asparagusic acid derivatives can coordinate to platinum(II)...
Dissertation
CC BY 3.0
2019

Entwicklung von 68Ga-Tracern für die Leberbildgebung mit Positronen-Emissions-Tomographie

Diese Dissertationsschrift beschreibt die Entwicklung neuer leberspezifischer 68Ga-Radiopharmaka für die hepatobiliäre Bildgebung mittels Positronen-Emissions-Tomographie (PET). Zu den etablierten Methoden der bildgebenden Leberdiagnostik zählt die Magnetresonanztomographie unter Verwendung von Kontrastmitteln,...
Dissertation
CC BY 4.0
2019

Measurement of atmospheric carbon dioxide abundance on board unmanned aircraft...

In this dissertation the COmpact Carbon dioxide analyser for Airborne Platforms (COCAP) is presented. COCAP measures the abundance of carbon dioxide (CO2) in ambient air as well as air temperature, humidity and pressure, and is specifically designed for the use on board small unmanned aircraft systems...
Dissertation
All rights reserved
2018

Synthesis of D-fructose conjugated metal complexes and polymers for breast...

The present thesis describes the synthesis, characterization and biological evaluation of D fructose conjugated molecules. The work focused on two different classes of compounds: On one hand low molar mass metal complexes and on the other hand polymers with complete different types of interaction with...
Dissertation
All rights reserved
2017

Micro- and nanopatterning by local electrochemical lithography

The present thesis addressed the preparation of functional micro- and nanopatterns by local electrochemical lithography. Different molecules and nanoparticles could be self-assembled on the lithographic patterns to form functional systems and devices. Several technologically important materials were...
Dissertation
All rights reserved
2017

Synthese und Eigenschaften von Bor- und Übergangsmetallkomplexen mit Curcuminoidliganden

Curcumin ist ein natürlicher Farbstoff aus curcuma longa. Curcumin und seine Derivate haben wegen ihrer biologischen und photophysikalischen Eigenschaften in den letzten Jahren viel Aufmerksamkeit erregt. Die Komplexierung mittels Bortrifluorid bewirkt eine deutliche bathochrome Verschiebung der Absorptions-...
Dissertation
All rights reserved
2016-05-23

Synthesis and characterization of photocatalytically active [FeFe]-hydrogenase...

Silicon containing [FeFe] hydrogenase model complexes show interesting properties as sulfur protonation due to an increased basicity by o(Si-C)-3p(S) filled-filled interaction, reduced overpotential for proton reduction and the formation of a the rotated state under reductive conditions. With these model...
Dissertation
All rights reserved
2016

Metal complexes with sulfur ligands as cytotoxic agents

A series of Pt(II) complexes with a ligand system based on ß-hydroxydithiocinnamic esters are described as potential cytotoxic agents. The pharmacophore was adapted by using different substituents at the aromatic moiety and by varying the alkyl chain lengths at the dithioester unit. Coordination towards...
Dissertation
All rights reserved
2005

DEGAS : Untersuchungen zur Verwitterung von Schwarzpeliten

Ziel der vorliegenden Arbeit war es, aus TG - MS - Daten (DEGAS) Parameter abzuleiten, mit deren Hilfe Verwitterungsprozesse an niedriggradig metamorphen Schwarzpeliten beschrieben werden können. Besonderes Augenmerk lag hierbei auf dem hochinkohlten organischen Material der Schiefer.