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Synthesis And Electronic, Magnetic Properties Of Low-Dimensional Organometallic Reduced Mesoporous Niobium Oxide Composites., Xun. He
Electronic Theses and Dissertations
Herein I report the synthesis of a new family of organometallic reduced mesoporous niobium oxide composites with mixed oxidation-state organometallic nanowires in the pores and investigate their electronic and magnetic properties. This is a wonderful system which allows us to systematically study one-dimensional molecular metals based on the respective organometallic species and the reducible mesoporous niobium oxide structure. Investigations were conducted on the effects of electron configuration, ionization potential, and electron affinity of organometallic species as well as the composition of mesoporous transition metal oxide walls on the electronic and magnetic properties in the composites and the loading level of …
Synthesis And Reactivity Of Group 4, 5, 13, And 14 Phosphinimide Complexes., Silke. Courtenay
Synthesis And Reactivity Of Group 4, 5, 13, And 14 Phosphinimide Complexes., Silke. Courtenay
Electronic Theses and Dissertations
A variety of complexes bearing the phosphinimide ligand, ranging from transition metal to main-group compounds, have been investigated. Reduction of CpTi(NPt-Bu3)Cl2 by magnesium powder resulted in the formation of the dimeric Ti(III)-species (CpTi(NPt-Bu3)(mu-Cl))2 2.1 , which was investigated by a single crystal EPR study. Reduction of CpTi(NPt-Bu3)Cl2 in the presence of 2,3-dimethyl-1,3-butadiene resulted in the formation of the butadiene complex CpTi(NPt-Bu3)(eta2-CH2C(CH3)C(CH 3)CH2) 2.2. The synthesis and reactivity of a variety of Cp*Ta-phosphinimide complexes have been explored. Reaction of stoichiometric amounts of R3PNTMS with Cp*TaCl4 afforded the complexes Cp*Ta(NPR3)Cl 3 (R = t-Bu3 3.1, i-Pr3 3.2). Further derivatization of 3.1 and …
Characterization Of The Effects Of Biosynthetically Incorporated Tryptophan Analogues In Rat Parvalbumin F102w And Structure-Function Studies Of Tryptophanyl-Trna Synthetase., Mauro. Acchione
Electronic Theses and Dissertations
Fluorescence spectroscopy of tryptophan residues is a valuable tool for dissecting the structure, function and dynamic behaviour of proteins. An important step in method development is the use of tryptophan analogues with unique photophysical properties that extend the utility of intrinsic protein fluorescence. Two difficulties limit the use of these analogues. Their structure, while similar to that of tryptophan, can perturb native protein structure resulting in misfolding or inactivity. There are also problems from an inability of tryptophanyl-tRNA synthetase (TrpRS) to use these analogues as a substrate in the tRNA charging reaction. The tryptophan residue in rat parvalbumin F102W is …
Engineering, Overexpression, Purification And Analytical Applications Of Recombinant Bioluminescent Reporters., Monique Elise. Verhaegen
Engineering, Overexpression, Purification And Analytical Applications Of Recombinant Bioluminescent Reporters., Monique Elise. Verhaegen
Electronic Theses and Dissertations
The initial project entailed the construction of a plasmid suitable for bacterial expression of the in vivo biotinylated aequorin photoprotein. The plasmid contained a biotin-acceptor coding sequence fused in-frame with the apoaequorin gene as well as the birA gene, encoding biotin protein ligase (BPL), responsible for post-translational biotinylation. The use of the biotin tag facilitated (a) the purification of aequorin from the crude cell extract using an avidin resin and (b) the direct complexation of aequorin with streptavidin for utilization as a reporter molecule. Streptavidin-biotinylated aequorin complexes were used for the quantification of biotinylated hybrids in a hybridization assay, with …
Infrared, Raman And Surface-Enhanced Resonance Raman Scattering Of N-Butylimido, Ethyleneamine Perylene (Ptcd-Nh(2)): Single-Molecule Detection Using Colloidal Silver And Silver Island Films., Tibebe. Lemma Mukria
Infrared, Raman And Surface-Enhanced Resonance Raman Scattering Of N-Butylimido, Ethyleneamine Perylene (Ptcd-Nh(2)): Single-Molecule Detection Using Colloidal Silver And Silver Island Films., Tibebe. Lemma Mukria
Electronic Theses and Dissertations
The vibrational spectra and the surface-enhanced (resonance) Raman scattering (SERS/SERRS) of a perylene dye containing a terminal NH2 group, n-butylimido, ethyleneamine perylene (PTCD-NH2) have been studied. The infrared, Raman and resonance Raman spectra of the material were recorded and vibrational fundamentals assigned. The vibrational assignments of fundamentals were aided with an ab-initio Hartree-Folk at 6-31G level of theory. Langmuir-Blodgett monolayers of the neat material were fabricated and the pi-A isotherms recorded. Mixed monolayers were also studied for applications in SERBS. The spectra of evaporated thin solid films were obtained and a complete spectroscopic characterization of these films is presented in …