Browsing Fakultät für Chemie (inkl. GAUSS) by Title
Now showing items 61-80 of 763
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Bioinspired dioxygen activation with copper complexes supported by Bis(oxazoline) and Bis(benzimidazole) ligands
(2023-06-20)Many synthetic complexes modeling the oxy form of the tyrosinase have been developed and have shown a preference for either the side-on peroxodicopper(II) (P) or the bis(-oxo)dicopper(III) (O) core depending on the ... -
Bioinspired Iron-Carbene Models of Heme and Non-Heme Enzymes: Electronic Structure and HAA Reactivity
(2022-03-15)The fast depletion of non-renewable energy sources requires modern chemists to develop new industrial processes that are more efficient and environmentally sustainable. In this framework, the functionalization (e.g. ... -
Bioinspired oxidation reactions of phenols with dinuclear copper complexes
(2008-03-07)This thesis is focused on the understanding of the cooperative effects in di- and oligonuclear transition metal complexes and their further application as catalysts for the oxidation of phenol substrates. In nature, two ... -
Bioinspirierte Sauerstoffaktivierung an Bis(benzimidazolyl)basierten Kupfer(I)komplexen und Spektroskopische Studien an Bis(benzoxazolyl) Kupfer(II)-Verbindungen
(2021-05-04)The active sites of type III copper proteins (i.e. tyrosinase) provide inspiration for the development of copper complexes for the activation of O2 as well as for catalytic oxidation and oxygenation reactions of CH substrates. ... -
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 and Theoretic Investigations of Unusual Iron-Sulphur Clusters
(2009-12-09)Biological Fe/S clusters are cofactors common to all living organisms. In fact, they are not only believed to belong to the most ancient biological cofactors but simple inorganic compounds ... -
Biomimetic Copper(I)-Mediated Activation of Dioxygen and Redox Non-Innocence in Copper(II) Complexes of Bis(oxazoline)s
(2015-10-01)The µ-η²:η²-peroxodicopper(II) core found in the oxy forms of the active sites of type III dicopper proteins have been a key target for bioinorganic model studies. Here, it is shown that simple bis(oxazoline)s (BOXs), which ... -
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 ... -
Biomimetische Oxidationsreaktionen mit zweikernigen Kupferpyrazolatkomplexen
(2003-11-25)A series of dinuclear copper (II) complexes with different pyrazolate ligands was synthesized and structurally characterized as biomimetic model complexes of the enzyme Catechol oxidase. ... -
Die Biomineralisation von Silica: Langkettige Polyamine und Aminolipide als selbstorganisierende Template für biomimetische Präzipitationen
(2010-02-09)Long-chain polyamines are thought to play an important role in the formation of the hierarchically structured silica cell walls of diatoms. We determined the influence of structural variations ... -
Bis(amidophenolate)-supported Pnictogen Complexes: Redox Activity, Cooperativity and Electromerism
(2025-11-26)This thesis describes the synthesis, characterization and reactivity of pnictogen compounds derived from the tetradentate, redox-active bis(amidophenolate) ligand, N,N′-bis(3,5-di-tert-butyl-2-phenoxy)-1,2-phenylenediamide. ... -
Bis(benzoxazol-2-yl)methanides in main group organometallic syntheses and enquiry-based education
(2023-02-27)The dissertation entitled “Bis(benzoxazol-2-yl)methanides in main group organometallic syntheses and enquiry based education” constitutes three main chapters. Each chapter concerns a different project the author worked on ... -
Brewsterwinkel-Mikroskopie zur Untersuchung der Kristallisation von Calciumcarbonaten an Modell-Monofilmen an der Grenzfläche Wasser/Luft
(2002-07-17)The remarkable structural diversity and mechanical strength of mineral phases associated with living organism (biominerals) has prompted substantial effort towards synthetically ... -
C-H Activation by Nickel and Iron Catalysis
(2019-08-08)The thesis contents methods for the selective activation and functionalization of C–H bonds, among the most abundant bonds in organic molecules. In particular, earth-abundant and cost-effective nickel and iron complexes ... -
C-H Activation for Sustainable Synthesis: Base Metal- and Electro-Catalysis
(2018-08-07)In the recent decades, metal-catalyzed C-H activation greatly expanded the available tools for the sustainable synthesis of bioactive molecules and organic materials. Within this thesis, new synthetic transformations based ... -
C-H and C-C Activation by Cobalt and Ruthenium Catalysis
(2017-12-18)The thesis contents methods for the selective activation and functionalization of C–H and C–C bonds, among the most abundant bonds in organic molecules. In particular, earth-abundant and cost-effective cobalt complexes ... -
C-H Bond Activation by Iridium(III) and Iridium(IV) Oxo Complexes
(2025-06-11)C−H activation by two isostructural, terminal iridium(III) and iridium(IV) oxo complexes is compared. While the driving forces for hydrogen abstraction are almost identical due to compensating contributions from H+ and e− ... -
C<sub>2</sub>-Symmetric Pyrazole-Bridged Ligands and Their Application in Asymmetric Transition-Metal Catalysis
(2016-06-03)Within the scope of this thesis the synthesis of a plethora of examples of in total three types of C2-symmetric pyrazole-bridged ligand systems (namely PyrBOX, PyrBPyBOX and ProPyrazole) could be established ... -
Carboxylate-Assisted Ruthenium(II)-Catalyzed C-H Alkylation and Alkenylation
(2015-10-30)Carboxylate-assisted ruthenium(II)-catalyzed C-H alkylation and alkenylation by triazole assistance and the efficient synthesis of isoindolinones -
Carboxylate-Assisted Ruthenium-Catalyzed C-H Bond meta-Alkylations and Oxidative Annulations
(2013-03-26)Site-selective ruthenium-catalyzed C-H bond functionalization was achieved under carboxylate-assistance. Direct ortho- and meta-alkylations on various arenes with unactivated alkyl halides has been accomplished and ...