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 14 of 14 for “"ion coordination"”.
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Transition metal ion coordination in hydrophilic polymer membranes
… this thesis is concerned with the investigation of transition metal ion complexation within hydrophilic copolymer membranes. The membranes are copolymers of 4-methyl-4'-vinyl-2,2'-bipyridine, the 2-hydroxyethyl ester of 4,4'- dicarboxy-2,2'-bipyridine & …
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Metal ion complexation, extraction and transport by crown and lariat ether compounds
… employed for alkali and alkaline earth metal cation separations due to their superior binding ability for these metal ions. Lariat ethers are crown ethers with one or more donor-groupbearing arms. Attachment of one or more side arms with potential metal ion coordination sites to a crown ether …
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Hierarchical control of hydrogel dynamics via choice of ligand chemistry
Hydrogel networks formed via dynamic metal-coordination chemistry display remarkable mechanical properties, such as self-assembly, stimuli-responsiveness, and the ability to self-heal. Recent efforts have looked into expanding the prevailing knowledge of metal ion-coordination chemistry to …
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EXPLORATION AND MECHANISTIC STUDY OF WEAKLY COORDINATING ANIONS UNDER THERMAL AND PHOTOCHEMICAL CONDITIONS FOR SELECTIVE TRANSFORMATIONS OF C-C MULTIPLE BONDS
… work has been to acknowledge the effects of anions in transition metal-based systems. In this respect, a novel family of weakly coordinating anions (imadazolylphenyl or IMP anions) in addition to traditional anions were compared under both thermal and photochemical conditions. A significant …
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Self-Assembly of Surface-modified Clays for Functional Biomimetic Materials
… with a platelet-like shape display strong gelation when dispersed in aqueous solutions because of their positively charged rims and negatively charged flat surfaces. In this thesis, my aim was to modify the surfaces of these clay particles such that we can both access their liquid crystalline …
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Synthesis and reactivity studies of mono-, bi-, and trimetallic complexes supported by oxidatively-resistant polyanionic ligands
Investigations of the oxidatively-resistant hexacarboxamide cryptand, mBDCA-5t-H₆, to support mono-, bi-, and trimetallic complexes are presented. Selective single metal ion insertion into the cryptand was achieved to generate the mono-Co(II) and Zn(II) complexes that contain proximal …
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Recombinant expression, purification and structural characterization of aspergillus niger ring finger domain using nuclear magnetic resonance spectroscopy
… domain. Previous studies determined the solution structure of the human RING finger domain using heteronuclear NMR spectroscopy. A bioinformatics analysis using the human RING finger from RBBP6 as searching bait revealed an unchanged zinc ion coordination pattern in all organisms except in …
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The Role of CH–π Interactions in Protein-Carbohydrate Binding
… biological processes, including cellular recognition and immune signaling. Binding is driven by several types of non-covalent interactions: hydrogen bonding, metal ion coordination, and the less well-understood CH–π interactions. CH–π interactions are pervasive in protein-carbohydrate binding …
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New adaptations of analytical tools for the study of dynamic interactions of lanthanide-based catalysis in aqueous media
… acid catalyzed carbon-carbon bond-forming reactions are of great interest in organic synthesis. However, many conventional Lewis acids, and almost all enantioselective Lewis acid catalysts, must be used under strictly anhydrous conditions to avoid hydrolysis and the difficulties associated with …
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Structural studies of Burkholderia pseudomallei invasion protein D (BipD), 2,4'-dihydroxyacetophenone dioxygenase (DAD) and L-threonine dehydrogenase (TDH)
The determination of novel protein structures is essential in advancing our understanding of how they function within their molecular environments, therefore providing some of the information necessary to exploit them in ways that will benefit society. Three very different novel proteins have been …
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Structural and Functional Studies of the SARS-CoV-2 NiRAN Domain
… dramatically disruptive event, wreaking devastation across the globe and radically impacting nearly every facet of human life. For the first time, a significant amount of global money and attention was directed at coronavirus (CoV) research, propelling the field to the forefront of biomedical …
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Evaluation and Development of Metal-Binding Agents that Alter Copper Bioavailability
<p>Transition metal ions are required nutrients for many organisms but also potent toxins if misappropriated. Iron (Fe) plays a central role in the transport of oxygen, and other transition metals, such as copper (Cu) or zinc (Zn), are found in enzymes. It is critical for the human body to maintain …
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New Solid Polymer Electrolytes for Lithium, Sodium, and Calcium-based Batteries
… power supply. The growing demand for lithium-ion batteries (LIBs) for this purpose, combined with concerns about lithium availability, has motivated the search for viable storage alternatives, such as sodium and calcium. While several studies have investigated different lithium-free liquid …
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Self-healing and ionic interactions: a look into thermal properties of sequence-specific ionic networks and the synthesis of spiropyran monomers for triggerd ionic networks
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-11-09 without embargo terms