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 18 of 18 for “"Chemistry--Dissertations, Academic"”.
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The evaluation of liquid hydrocarbon contamination of soil around petrochemical tank farms at a Durban refinery
… for the Degree of Master of Technology: Chemistry, Durban Institute of Technology, Durban, South Africa, 2004.
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AB initio studies of a pentacyclo-undecane cage lactam
… for the Degree of Master of Technology: Chemistry, Durban Institute of Technology, Durban, South Africa, 2003.
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Synthesis, Linear and Nonlinear Photophysical Characterization of Two Symmetrical Pyrene-terminated Squaraine Derivatives in Solution
Two indole-based squaraine dyes bonded to two pyrenyl groups through vinyl- and ethynyl- linkers were synthesized with the aim of enhancing the intramolecular charge transfer interaction in addition to improving their optical properties. The absorption and emission properties of these derivatives …
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Synthesis and Characterization of New Probes for use in Fluorescence and X-ray CT Bioimaging
The pursuit of more suitable drugs intended for possible biological applications are a continuously growing topic of research within the scientific community. One of these suitable qualities includes the need for hydrophilicity and or some appropriate delivery system for the drug to enter into …
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Action potentials as indicators of metabolic perturbations for temporal proteomic analysis
The single largest cause of compound attrition during drug development is due to inadequate tools capable of predicting and identifying protein interactions. Several tools have been developed to explore how a compound interferes with specific pathways. However, these tools lack the potential to …
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Improvements on Instrumentation to Explore the Multidimensionality of Luminescence Spectroscopy
… are readily available in most academic institutions, industrial settings and research institutes, the developments presented here should facilitate the widespread application of line-narrowing spectroscopic techniques to the direct determination, no chromatographic separation, …
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Optimization of Molecular Beacon-Based Multicomponent Probes for Analysis of Nucleic Acids
Detection of single nucleotide substitutions (SNS) in DNA and RNA has a growing importance in biology and medicine. One traditional approach for recognition of SNS takes advantage of hybridization probes that bind target nucleic acids followed by measuring ?Tm, the difference in melting …
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In Actu Et In Silicio: Linear and Nonlinear Photophysical Characterization of a Novel Europium Complex, and Incorporating Computational Calculations in the Analysis of Novel Organic Compounds
Despite not being a tangible substance, light is becoming an increasingly valuable tool in numerous areas of science and technology: the use of laser excitation of a fluorescent probe can generate incredibly detailed images of cellular structures without the need for large amounts of dissection; …
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Photophysics of Organic Probes and their Applications in Bioimaging & Photodynamic Therapy
Over the past several decades the phenomenon of luminescence (divided into fluorescence and phosphorescence) has received great attention in the field of biological science. This quest has motivated scientists for a variety of applications, including fluorescence imaging. Fluorescence microscopy …
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1, 2, and 3 Dimension Carbon/Silicon Carbon Nitride Ceramic Composites
Polymer-derived ceramics (PDCs) are exceptional ultra-high temperature and stable multifunctional class of materials that can be synthesized from a polymer precursor through thermal decomposition. The presented research focuses on 1-D nanofibers, 2-D films and 3-D bulk, carbon-rich silicon carbon …
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Synthesis of Fluorescent Molecules and their Applications as Viscosity Sensors, Metal Ion Indicators, and Near-Infrared Probes
The primary focus of this dissertation is the development of novel fluorescent near-infrared molecules for various applications. In Chapter 1, a compound dU-BZ synthesized via Sonogashira coupling reaction methodology is described. A deoxyuridine building block was introduced to enhance hydrophilic …
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Aggregation of Squaraine Dye Derivatives in Solid State Spin-coated Thin Films
Squaraine dyes have been the subject of intensive studies due their unusual electronic properties that make them good candidates for a wide range of applications in various technological fields. They are particularly promising in nonlinear optics, bioimaging for labeling and sensing of …
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Photoactivatable Organic and Inorganic Nanoparticles in Cancer Therapeutics and Biosensing
… attachment was accomplished by disulfide linker chemistry. This chemistry is reversible in the presence of sulfur reducing biomolecules, resulting in Qdots in a brightly fluorescent ON state. Glutathione (GSH) is such a biomolecule that is present in the intracellular environment. Experimental …
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Fluorescence Off-On Sensors for F-, K+, Fe3+, and Ca2+ Ions
… research techniques in modern analytical chemistry, biochemistry, and biophysics. At present, fluorescence is a dominant methodology widely used in a great number of research domains, including biotechnology, medical diagnostics, genetic analysis, DNA sequencing, flow cytometry, and …
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Chemical Analysis, Databasing, and Statistical Analysis of Smokeless Powders for Forensic Application
Smokeless powders are a set of energetic materials, known as low explosives, which are typically utilized for reloading ammunition. There are three types which differ in their primary energetic materials; where single base powders contain nitrocellulose as their primary energetic material, double …
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Structure-Property Relationship of the Two-Photon Circular Dichroism of Compounds with Axial and Helical Chirality
… role that chiral molecules play in life, chemistry, and biology as well as their importance in the development of new drugs and technologies. The efforts to understand chiral systems have been mainly driven by spectroscopic methods that leverage on the opposite responses that enantiomers …