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 20 of 502 for “"supramolecular"”.
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Multivalent Supramolecular Systems
… study of chelate cooperativity in multivalent supramolecular systems. Firstly, a well-known H-bonded rosette system was revisited and the effective molarity was determined experimentally by 1H NMR titrations to be around 2 M, which is a high chelate cooperativity compared to other …
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Supramolecular architectures for neural prostheses
Neural prosthetic devices offer a means of restoring function that have been lost due to neural damage. The first part of this thesis investigates the design of a 15-channel, low-power, fully implantable stimulator chip. The chip is powered wirelessly and receives wireless commands. The chip …
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Anion-Tuning of Supramolecular Gel Properties
… great interest from material, synthetic, supramolecular and biological chemists. Anion tuning of these supramolecular gels is a burgeoning field of study. Two classes of compounds, chiral bisureas and urea derivatised pyrazoles are studied. The synthesized chiral bisurea compounds act as …
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Search and Optimization of Supramolecular Systems
Computer simulations are presented which address four key topics in materials design. First, a genetic algorithm is described that is able to find the global free energy minimum conformation of tricosane. Results from the application of the GA to other molecules suggest that it can reliably find …
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Supramolecular modification of selected antiretroviral drugs
… makes them ideal candidates for attempted supramolecular derivatisation. The primary objective of this study was to carry out cocrystal screening and attempt cyclodextrin complexation with nevirapine, efavirenz, lamivudine and zidovudine, with a view to identifying and isolating new solid …
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Supramolecular modification of selected antitubercular drugs
The author's objective was to prepare new solid phases of the antitubercular drug isoxyl [specifically polymorphs, solvates, cyclodextrin (CD) inclusion complexes and cocrystals] and to isolate and characterise a range of solvated forms of the rifamycin antibioticsrifampicin and rifaximin.
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Supramolecular nano-stamping : analyzing market potential
An analysis was carried out on the process of Supramolecular Nano-Stamping (SuNS) in order to determine whether or not the science involved has market potential in the DNA microarray industry. This industry is rapidly expanding and succeeding in such an atmosphere would generate a large amount of …
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Injectable supramolecular hydrogels for insulin delivery
… modulating the release of insulin. We have used supramolecular hydrogels created from cyclodextrin-adamantane mediated dynamic crosslinking of hyaluronic acid and show that these hydrogels can form an injectable depot in vivo. We further demonstrate that by changing the molecular weight and …
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Supramolecular architectures: macrocycles, catenanes and polyrotaxanes
Polyrotaxanes are molecular composites consisting of three components: linear polymers, bulky stoppers at the ends of polymer chains and macrocycles threaded by the polymers. A series of tetraarylmethyl derivatives as blocking groups were synthesized. Using tris(p-ten-butylphenyl)( …
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Supramolecular hydrogels based on 1,3,5‐benzene tricarboxamides
… systems to elucidate their potential to form supramolecular hydrogels. The thesis covers four main subjects: i) the self-assembly behavior of pH-sensitive BTAs in aqueous systems is investigated with regard to their ability to form nano-fiber networks and supramolecular hydrogels; ii) the …
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Photo-reactive Surfactant and Macromolecular Supramolecular Structures
For the first time nonwoven fibrous scaffolds were electrospun from a low molar mass gemini ammonium surfactant, N,N–-didodecyl-N,N,N–,N–-tetramethyl-N,N–-ethanediyl-di-ammonium dibromide (12-2-12). Cryogenic transmission electron microscopy (cryo-TEM) and solution rheological experiments revealed …
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Dynamic supramolecular hydrogels with adaptive biological functionality
… part of this thesis, we demonstrate a facile supramolecular approach for the formation of functionalized nanofibers by combining the advantages of biocatalytic self-assembly and surfactant/gelator co-assembly. This is achieved by enzymatically triggered reconfiguration of free flowing micellar …
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Structural studies of supramolecular host-guest systems
… study of the structure and function of supramolecular host-guest systems. Host-guest inclusion complexes were formed between β-Cyclodextrin (β-CD) and its copolymers (as hosts), with several types of guest molecules both in aqueous solution and the solid state. The research is divided …
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Structural supramolecular constructs of spheres and tubes
… walled carbon nanotubes. The final project took supramolecular hexamers from the cup-shaped pyrogallol[4]arene and produced large spherical and tubular aggregates.
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Synthesis and supramolecular assembly of biomimetic polymers
… In this way, fluidic-directed assembly of supramolecular structures allows for unprecedented manipulation at the nano- and mesoscale, which has the potential to provide rapid and efficient control of functional materials properties.
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Supramolecular Chemistry at the Polymer-Oil Interface
… binding site was chosen as the supramolecular surface interaction. The binding unit was incorporated into the polyamide-imide. The synthesis of the binding site polymer was achieved in two stages; the reproduction of the commercial polymer and the synthesis of a polymer …
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Carboxylate metallogels - an adventure in supramolecular chemistry
The field of supramolecular gels has attracted a great deal of attention as these versatile materials have been shown to be highly tunable and responsive to stimuli making them attractive for a multitude of potential applications such as drug delivery, energy and gas storage, and waste water …
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