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 29 for “"supramolecular assemblies"”.
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Supramolecular Assemblies: Dendrimers, Linear Arrays, and Polypseudorotaxanes
… the successful construction of nanoscale assemblies by non-covalent forces has been described more frequently in the recent literature. This significant progress is largely due to transferring of concepts found in the biological systems (e.g., the tobacco mosaic virus and the DNA double …
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Novel supramolecular assemblies based on sulfur-nitrogen radicals.
This thesis describes the synthesis of a range of novel dithiadiazolyl radicals. The structures of these compounds are discussed. The physical properties of several compounds have been investigated using EPR spectroscopy and magnetic susceptibility studies. Chapter one begins with an overview of …
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Understanding the Structure and Dynamics of Supramolecular Assemblies and Peptides in Solution
Large complex supramolecular assemblies to small dipeptides all have significantly different dynamical and structural properties in solution. In the first part of the dissertation, a detailed theoretical investigation of the dynamics of a solution-phase supramolecular assembly is presented to …
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Supramolecular assemblies of conjugated sensory polymers and the optimization of transport properties
(cont.) The vectorial energy transfer design of sensory films to harvest and direct energy to the surface detection layer toward ultimate signal amplification has been discussed. Third, the role of chemical structure of a sensory polymer in the selectivity of a conjugated polymer-based fluorescent …
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Design of ultra-robust supramolecular assemblies and their application to water treatment
… Here, I present the design of molecular self-assemblies constructed from small molecule aramid amphiphiles to overcome these limitations. Aramid amphiphiles incorporate a Kevlarinspired domain that imparts strong, cohesive intermolecular interactions between molecules. This design results in …
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Hierarchical Supramolecular Assemblies Based on Host-Guest Chemistry between Cucurbit[n]uril and Azobenzene Derivatives
… as a platform to hierarchically fabricate supramolecular constructs, including crystalline structures and composite materials. Specifically, novel morphology-controlled (1D needle-like, 2D sheet-like) crystals have been prepared by adjusting the assembly of Azo-CB[8] complexes, which can be …
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Enhanced Architectural and Structural Regulation Using Controlled Free Radical Polymerization Techniques; Supramolecular Assemblies: Pseudorotaxanes and Polypseudorotaxanes
… highly efficient, synthetically designed supramolecular systems.
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Molecular Recognition in Host-Guest Ionophore-Siderophore Assemblies
<p>This work examines the characterization of supramolecular assemblies and, more specifically, host-guest complexes involved in molecular recognition events. The supramolecular assemblies studied take root from metal ion delivery in biological uptake pathways, specifically the delivery of iron to …
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Controlling the Morphology and Optical Properties of Nanostructured Materials: From Inorganic Nanoparticles to Conjugated Polymers
… thickness by layer-by-layer synthesis. The supramolecular assemblies of amphiphilic conjugated block copolymers exhibited highly tunable photoluminescence properties depending on their self-assembly structures. These studies demonstrated that the specific structures can be designed and …
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Supramolecular Ru II, Pt II Complexes Bridged by 2,3,5,6-tetrakis(2-pyridyl)pyrazine (tppz)
… 2,3,5,6-tetrakis(2-pyridyl)pyrazine. These two supramolecular assemblies display remarkably different stereochemistry, electrochemistry and photochemistry. The chapters in this document deal with a multidisciplinary project that is fundamental to the design and synthesis of similar entities with …
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OCTAHEDRAL METAL CLUSTERS AS MOLECULAR BUILDING BLOCKS OF COORDINATION POLYMERS: SYNTHESIS, CHARACTERIZATION, AND STUDY OF THEIR HOST-GUEST INTERACTIONS
… molecular building blocks for the preparation of supramolecular assemblies with different dimensions. Using the self-assembly approach, eight new compounds were synthesized and their crystal structures have been determined from sing crystal X-ray diffraction. Two salts …
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Interaction of sPLA2 phospholipases with assemblies of natural and synthetic amphiphiles and the development of a drug delivery system for the treatment of breast cancer
… and work at the water/oil interface of lipid supramolecular assemblies, unlike other hydrolase enzymes, which process their substrates individually. Different subclasses of sPLA2 have preferences for different phospholipids, withPLA2-GIB hydrolyzing PCs more than PLA2-GIIA as a typical …
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Synthesis and Characterization of Monosaccharide-derived Low Molecular Weight Gelators
… intermolecular forces and interactions to form supramolecular assemblies that trap solvent within their matrices. Because of the non-covalent nature of the forces of self-assembly, the gelation process is typically thermally reversible. In addition, low molecular weight gelators can also be …
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MULTIPLE STRATEGIES IN COMPUTATIONAL PROTEIN DESIGN: STRUCTURAL INTUITION, PROBABILISTIC INVERSE FOLDING, AND GENERATIVE APPROACHES
… contribute to the mechanical behavior of supramolecular assemblies of one-dimensional coiled coils, revealing the molecular basis of their exceptional rigidity. Building on these insights, rational modifications—such as electrostatic patterning and hydrophobic tuning—were introduced to …
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Supramolecular quantum dot-porphyrin assemblies for biological oxygen sensing
… thesis presents new oxygen sensors that are a supramolecular assemblies of a quantum dot (QD) and a palladium(II) porphyrin. High spectral overlap between QD emission and porphyrin absorption results in efficient Förster resonance energy transfer (FRET) for signal transduction in these sensors. …
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Novel surfactants for the production of functional nanostructured materials via the ionic self-assembly (ISA) route = Neuartige Tenside für die Synthese funktioneller nanostrukturierter Materialien durch ionische Selbsorganisation
In recent years, the aim of supramolecular syntheses is not only the creation of particular structures but also the introduction of specific functions in these supramolecules. The present work describes the use of the ionic self-assembly (ISA) route to generate nanostructured materials with …
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Order in Thin Films of Diblock Copolymers by Supramolecular Assembly
… voids were fabricated using the principles of supramolecular assembly and self-organization in polymers. Such nanoporous membranes can be used as templates for synthesis and patterning of various organic and inorganic materials. In this thesis 4-vinylpyridine fragments of …
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Self-Assembly: Synthesis and Complexation of Crown Ethers and Cryptands with R2-NH2 Ions
… that the DB24C8 moiety be used in components of supramolecular assemblies. The functionalization of poly(propylene imine) dendrimers with two different crown ethers as peripheral moieties was attempted. The 1st, 3rd, and 5th generation poly(propylene imine) dendrimers were functionalized with …
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Development of Quantitative Solid-State NMR Methods to Characterize Membrane Proteins
… the pentamers cluster together, forming supramolecular assemblies that may have a unique role in the virus life cycle. New sensitivity-enhanced carbon-fluorine rotational-echo double-resonance (REDOR) experiments are developed and used to investigate the drug binding of E. The small …
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The synthesis and characterisation of inorganic and organic luminophores suitable for biomolecule conjugation
… under extensive investigation for many years in supramolecular assemblies due to their favourable photophysical and redox properties including; absorbance and emission in the visible region of the spectrum, large stokes shifts, long lifetimes, intense luminescence, good photostability and useful …
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