Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Helicate"”.
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Lumineszierende zweikernig dreisträngige Helicate
Luminescent triple-stranded dinuclear helicates The building of systems showing a special function or a property that makes them suitable for the preparation of functional materials will become more and more important in the next years. Based on the "bottom-up approach" supramolecular chemistry can …
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Funktionalisierte hierarchisch gebildete Helicate
The work bases on synthesis and study of helicates formed by hierarchical self-assembly. Self-assembly plays an important role in nature as well as in many chemical processes. Small building blocks assemble to supramolecules. For molecular recognition, perfect design of the sub-units is essential …
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Metallo-supramolecular Architectures based on Multifunctional N-Donor Ligands
… polymers, a metallamacrocycle, double-stranded helicates, triple-stranded helicates as well as of circular meso-helicates. The nature of the spacer in the Schiff base ligands, the noncovalent weak interactions, such as hydrogen bond, face-to-face π-π and edge-to-face CH-π interactions, are all …
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Selbstorganisation von Helicaten und molekularen Tetraedern
… were used for the multistep self-assembly of helicate-type dinuclear titanium(IV) or gallium(III) complexes in the presence of lithium ions. Further more, coordination studies with linear dicatechol diimine ligands, which possess due to the variation of the spacer different geometrical and …
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Hierarchische Selbstorganisation von Helicaten mit substituierten 8-Hydroxychinolinliganden
… self-assembly of dinuclear, triple-stranded, helicate-type complexes, which has been studied intensivly (Build-up and disaggregation, formation of dynamic combinatorial libraries and magnetochemical properties).These results could be revealed:1. Esterification could be done in good yield to …
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Supramolecular anticancer agents and their effects on cells and biomolecules
… biological studies on known metal supramolecular helicates as well as the design of a new helicate in order to improve upon existing drugs. In chapter three, the DNA three-way junction binding of a number of supramolecular cylinders is described. Three-way junction binding is a new mode of DNA …
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Enantiomerenreine beta-Diketonate für lumineszierende helicat-artige Komplexe
… complexations lead to enantiomerically pure helicates. All ligands were synthesised by a Claisen-type condensation reaction . During the work a huge number of optimisation attempts of the coupling reaction, as well as alternative synthesis routes, like Knoevenagel-, Fries- or Cupratreactions …
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Homo- and heterodinuclear luminescent helicates
… optoelectronics. On the other hand, luminescent helicates are in the focus of attention of supramolecular chemistry. In this thesis, the self-assembly principles are applied to prepare mono- and dinuclear lanthanide(III)-containing systems using 8-hydroxyquinoline and its derivatives as building …