Browsing by Author "Hitt, Britney"
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Item Potential Tomorrow’s Generation of Traffic Light Phosphors: New Copper Halide Cluster Complexes as Efficient Solid-State Emitters With Tunable Monochrome Colors(2022) Alshammari, Nowyer; Hitt, Britney; Nesterov, Vladimir; Rawashdeh-Omary, ManalLuminescent copper complexes are under current scrutiny for potential materials and biomedical applications. In this contribution, strongly- luminescent copper(I) halide dimethylpyrazole cluster complexes have been prepared under variable synthetic methods and conditions, including solventless (via mechanical grinding) and in organic solvent-mediated (chloroform, acetonitrile or dichloromethane) reactions. The products isolated exhibited rather bright and tunable monochrome colors that correspond to those of traffic lights (red, green, and yellow) in the solid state. Multiple products were isolated by altering the reaction stoichiometry and/or aforementioned synthetic variables even for the same chemical composition. Characterization of these complexes is presented using Fourier-transform infrared (FTIR), thermogravimetric analysis (TGA), and nuclear magnetic resonance (NMR) spectroscopy to ascertain their purity and by UV/Vis absorption and photoluminescence (steady state and lifetimes) to characterize their photophysical properties.Item Quantifying the Detection Limit of Volatile Organic Compounds by Luminescence Using Trinuclear Silver(I) and Copper(I) Pyrazolate(2022) Hitt, Britney; McNeill, Alice; Beatty, John; Rawashdeh-Omary, ManalTrinuclear silver(I) and copper(I) pyrozolates have the ability to switch- on luminescence in the presence of volatile organic compounds (VOCs) such as benzene, and switch off in the absence of VOCs. These compounds exhibit the potential for use as VOC detectors in industrial settings where high VOC levels are unsafe for workers, and improving the output of organic light emitting diodes. Trinuclear silver(I) and copper(I) pyrazole complexes have been prepared using solvent mediated, air free schlenk technique under different solvents and a green synthetic route involving mechanical grinding. In depth photoluminescence will be studied using a PTI QuantaMaster 30 Spectrofluorometer with a Kin-Tek gas flow generator attached to observe the response of 1 - 10 ppm of benzene exposure while under room temperature and liquid nitrogen.Item Synthesis and characterization of novel copper(I) and silver(I) mixed ligand complexes(2024-05) Hitt, Britney; Omary, Manal; Beatty, John; Salazar, GustavoThis thesis is a study of the synthesis and characterization of different novel mixed ligand coinage metal complexes. It discusses one main project divided by three chapters covering the synthesis, structure, and characterization of copper(I) and silver(I) complexes, photophysical properties, and detection limits of volatile organic compounds. Chapter one discusses the introduction to trinuclear pyrazolate complexes of d10 coinage metals, metal-ligand bonding, N-donor azolate ligands, mixed metal-ligand complexes, factors affecting photophysical properties, copper(I) halide clusters, and potential applications such as metal-organic frameworks (MOFs), solar cells, organic light emitting diodes (OLEDs), and potential gas/vapor sensors for volatile organic compounds (VOCs). Chapter two involves the different synthetic routes, solvent-mediated and solventless, of copper(I) and silver(I) mixed-ligand complexes and their characterization by melting point, FTIR, thermogravimetric analysis, elemental analysis, photoluminescence, and 1H NMR. Chapter three will be a conclusion of the compiled results from chapter two and their potential applications.