Index Catalog // ScholarsArchive@OSU

High quantum-yield phosphors via quantum splitting and upconversion

Creator:: Jeong, Joayoung
Abstract:: The Gd3+ ion has been used to induce quantum splitting in luminescent materials by using cross-relaxation energy transfer (CRET). In Nd:LiGdF4, quantum splitting results from a two-step CRET between Gd3+ and Nd3+, first involving a transition 6G→6I on Gd3+ and an excitation within the 4f3 configuration of Nd3+ followed by...
Resource Type:: Dissertation
Full Text:: pathways labeled a through j. Processes a through d are shown displaced downward by 2500 cm-1 reflecting

Luminescent sulfides and solution-deposited oxide thin films

Creator:: Anderson, Jeremy T.
Abstract:: Solid state luminescent sulfides are prepared as powders in order to elucidate the relationship between structure and light emission. While the sulfides studied in this dissertation are known phosphors, materials are investigated in a variety of new ways. Elementary properties and structures of MgS are reviewed, and preparation of MgS...
Resource Type:: Dissertation
Full Text:: . Keszler and A. Diaz, Mat. Res. Soc. Symp. Proc. 453, 247 (1997). [5] P. Dorenbos, J. Lumin. 104, 239

Determination of fluorochemicals in waste-dominated aqueous systems

Creator:: Huset, Carin A.
Abstract:: While fluorochemicals have been detected all over the world and in wastewater treatment plants, the effect of wastewater effluent on the receiving waters has not been evaluated. In the first study, the mass flow of fluorochemicals emanating from wastewater treatment plants along the Glatt River in Switzerland was evaluated. The...
Resource Type:: Dissertation
Full Text:: -461. (21) Hinderliter, P. M.; Mylchreest, E.; Gannon, S. A.; Butenhoff, J. L.; Kennedy, G. L., Jr

Wide band gap semiconductors and insulators : synthesis, processing and characterization

Creator:: Hersh, Peter A.
Abstract:: The work presented here is focused on applying basic principles of solid-state chemistry to the study and development of new wide band-gap semiconductors and insulators for photovoltaic and electronic-device applications. Analysis of crystal structure, band structure, optical band gap, morphology and transport properties provides fundamental insight into materials performance as...
Resource Type:: Dissertation
Full Text:: . Contreras, B. Egaas, K. Ramanathan, J. Hiltner, A. Swatzlander, F. Hason, R. Noufi, Prog. Photovol.: Res

Polarization spectroscopy and photodissociation studies of nitroaromatic compounds in the gas phase

Creator:: Abbott, James E.
Abstract:: The central purpose of this dissertation was to explore and expand the use of an uniform electric field for orientation and for subsequent spectroscopic investigation of asymmetric polar molecules in the gas phase. The systems of study were nitrobenzene (NB) and the nitrotoluene (NT) isomers. We were able to quantitatively...
Resource Type:: Dissertation
Full Text:: . Abbott, Jr. A DISSERTATION submitted to Oregon State University in

Design, characterization, and application of spectrometers for determination of low-level dissolved oxygen with small-volume sampling methodology

Creator:: Cakin, Defne
Abstract:: New analytical methods and instrumentation were developed for the determination of dissolved oxygen (DO) at low concentrations in water. The methods were based on monitoring the absorbance increase due to the oxidation of reduced indigo carmine (IC) by oxygen in the sample in different types of spectrometer cells. Spectrophotometer cells...
Resource Type:: Dissertation
Full Text:: : ___________________________________________ James D. Ingle, Jr. New analytical methods and instrumentation were developed for the

Nonmuscle myosins II-B and Va are components of detergentresistant membrane skeletons derived from mouse forebrain

Creator:: Ishmael, Jane E., Safic, Masa, Amparan, David, Vogel, Walter K., Pham, Tuyen, Marley, Kevin, Filtz, Theresa M., and Maier, Claudia S.
Abstract:: Myosins are actin-based molecular motors that may have specialized trafficking and contractile functions in cytoskeletal compartments that lack microtubules. The postsynaptic excitatory synapse is one such specialization, yet little is known about the spatial organization of myosin motor proteins in the mature brain. We used a proteomics approach to determine...
Resource Type:: Preprint and Article
Full Text:: is known about the spatial organization of myosin motor proteins in the mature brain. We used a

Synthesis and characterization of novel stationary phases for small scale liquid chromatographic separations of proteins and nanoparticles

Creator:: Hutanu, Daniela
Abstract:: The emerging field of nanotechnology strictly requires the micro-scaling of the available separation technology and the design of novel devices for separations of molecules of interest. The separation of proteins and nanoparticles is challenging due to their relatively large size, non-specific adherence to surfaces and instability in many solvents. This...
Resource Type:: Dissertation
Full Text:: proteins with high specificity, a DNA aptamer selected for α-thrombin was employed as an affinity

Gas-phase fragmentation chemistry of protonated peptide ions

Creator:: Bythell, Benjamin James
Abstract:: The fragmentation characteristics of protonated peptides have been investigated using tandem mass spectrometry (MS/MS) under various fragmentation regimes and detailed density functional theory (DFT) reaction pathway calculations. The DFT calculations predict novel salt-bridge stabilized transition structures as well as consecutive reactions occurring in proton-bound dimers for some of the ions...
Resource Type:: Dissertation
Full Text:: paper J. Am. Soc. Mass Spectrom., 2007, 7, 1291-1303 (Chapter 2). Prof. Chrys Wesdemiotis was a minor

Graphite intercalation compounds containing fluoroanions

Creator:: Katinonkul, Watcharee
Abstract:: New chemical synthesis strategies have been investigated for the preparation of acceptor-type graphite intercalation compounds (GIC's) with fluoroanions in order to obtain new materials and to develop a better understanding of the synthetic approaches and properties of the products. New GIC's containing borate chelate anion such as bis(oxalato)borate, CxB[OC(O)C(O)O]₂•δF, are...
Resource Type:: Dissertation
Full Text:: to obtain new materials and to develop a better understanding of the synthetic approaches and

ScholarsArchive@OSU

High quantum-yield phosphors via quantum splitting and upconversion

Luminescent sulfides and solution-deposited oxide thin films

Determination of fluorochemicals in waste-dominated aqueous systems

Wide band gap semiconductors and insulators : synthesis, processing and characterization

Polarization spectroscopy and photodissociation studies of nitroaromatic compounds in the gas phase

Design, characterization, and application of spectrometers for determination of low-level dissolved oxygen with small-volume sampling methodology

Nonmuscle myosins II-B and Va are components of detergentresistant membrane skeletons derived from mouse forebrain

Synthesis and characterization of novel stationary phases for small scale liquid chromatographic separations of proteins and nanoparticles

Gas-phase fragmentation chemistry of protonated peptide ions

Graphite intercalation compounds containing fluoroanions

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