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  • 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:
    multijunction solar cells are presented in chapters 2-6. A new process for solution-deposited and

  • Studies towards the total syntheses of (+)-phomactins A, D and G

    Creator:
    Schwartz, Keith D.
    Abstract:
    Studies towards the total synthesis of (+)-Phomactin A (1), D (6), and G (9), fungal metabolites with unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediates 354 and 356, which contain all of the carbon atoms of 1, 6 and 9....
    Resource Type:
    Dissertation
    Full Text:
    James D. White Studies towards the total synthesis of (+)-Phomactin A (1), D (6), and G (9), fungal

  • Development, validation and the application of a congener specific photodegradation model for PBDEs

    Creator:
    Zeng, Xia
    Abstract:
    The thermodynamic properties of 39 PBDEs have been calculated using Gaussian 03 on the B3LYP/6-31G(d)//B3LYP/6-31G(d) level. The PBDE congeners' enthalpies of formation increase with increasing number of bromines and show a strong dependence on the bromine substitution pattern. The effects of bromine substitution pattern have been quantitatively studied by GAM...
    Resource Type:
    Dissertation
    Full Text:
    PBDEs have been calculated using Gaussian 03 on the B3LYP/6-31G(d)//B3LYP/6-31G(d) level. The PBDE

  • Synthesis of furanoeremophilane sesquiterpenoids

    Creator:
    Shanmugham, Meenakshi Sundaram
    Abstract:
    Two approaches to the tricyclic core of the furanoeremophilane sesquiterpenoids are described. The first approach entails a projected Diels-Alder/retro Diels-Alder reaction of an acetylenic oxazole 64. Construction of the pivotal aldehyde 67 commenced from ketone 68. The acetyenic moiety was then introduced via a Felkin-Ahn addition of lithiopropyne to aldehyde...
    Resource Type:
    Dissertation
    Full Text:
    approach exploited a new annulation strategy. The aldehyde 64 was advanced to the 2, 4, 6

  • The analysis of haloethylenes using Resonance Electron Capture - Mass Spectrometry and data analysis software

    Creator:
    Figard, Benjamin J.
    Abstract:
    Resonance Electron Capture Mass Spectrometry (REC-MS) is a sensitive experimental technique for the study of gas-phase compounds with positive electron affinity. This technique was used to study a class of compounds known as baloetbylenes containing chlorine and bromine substitutions. Haloetbylenes are an important class of compounds because ethylene is the...
    Resource Type:
    Masters Thesis

  • Synthesis of novel ambifunctional atropisomeric 2,2',6,6'-tetrasubstituted biphenyls and investigation of their properties and organocatalytic activity

    Creator:
    Sephton, Mark Alan
    Abstract:
    Ambifunctional axially chiral 2,2',6,6'-tetrasubstituted biphenyls containing nucleophilic (or basic) functional groups juxtaposed with hydrogen-bond donors were synthesized and their properties studied. Applications for the prepared biaryls as potential organocatalysts for enantioselective carbon-carbon bond forming reactions were examined. Processes investigated included: aldol, Michael, nitroaldol (Henry), and Baylis-Hillman reactions. The novel amidoamine...
    Resource Type:
    Dissertation
    Full Text:
    reactions. The novel amidoamine 2',6-dimethoxy-N-methyl-6'-[(methylamino)methyl]- biphenyl-2

  • Semi-volatile fluorinated organic compounds in Asian and Pacific Northwestern U.S. air masses

    Creator:
    Piekarz, Arkadiusz M.
    Abstract:
    Current studies suggest that perfluorinated organic compounds, such as fluorotelomer alcohols (FtOHs) in the troposphere, may be precursors of perfluorocarboxylic acids and perfluorosulfonates in remote regions. Fluorinated organic compounds were investigated in archived extracts collected from remote locations in Okinawa, Japan (HSO) and Mount Bachelor, Oregon (MBO) during the springs...
    Resource Type:
    Masters Thesis
    Full Text:
    FtOHs 6:2 fluorotelomer acrylate, perfluorooctane sulfonamido acrylates, perfluorobutane sulfonamide

  • Analysis of semi-volatile organic contaminants and their accumulation in remote aquatic ecosystems of the western US

    Creator:
    Ackerman, Luke K.
    Abstract:
    Many pesticides, polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and polycyclic aromatic hydrocarbons are persistent, bio-accumulative, and toxic. These semi-volatile organic compounds (SOCs) can undergo atmospheric transport and deposition in cold, remote ecosystems. A better understanding of their accumulation in the fish of these ecosystems is important to better predict...
    Resource Type:
    Dissertation
    Full Text:
    Monograph No.3: Selected Brominated Flame Retardants," OECD, 1996. 6 (4) Khalili, N. R.; Scheff

  • High resolution spectroscopy of sulfur trioxide and carbon suboxide

    Creator:
    Masiello, Tony
    Abstract:
    High resolution spectroscopy was used to study the properties of two simple polyatomic molecules, sulfur trioxide, SO₃, and carbon suboxide, C₃O₂. The fundamental modes and several hot bands of the ¹⁸O isotopic fonns of SO₃ (³²S¹⁸O₃ and ³⁴S¹⁸O₃) have been investigated using both infrared spectroscopy and coherent anti-Stokes Raman scattering...
    Resource Type:
    Dissertation
    Full Text:
    ') of vl = 2199.9721(6), (B'-B") = 2.029(6) x104. Other transitions originating from higher v7 levels

  • Aging and oxidative damage to mitochondrial membrane proteins

    Creator:
    Tong, Tony T.
    Abstract:
    Mitochondria provide energy for biological cells to function, but this process is also a source of oxygen radicals that are capable of damaging nearby proteins. Mitochondrial protein damage can eventually lead to cell death, especially in the case of heart cells, where mitochondria are present in the highest concentrations. As...
    Resource Type:
    Honors College Thesis
    Full Text:
    validated with thioredoxin (TRX) as a model protein and led to the identification of the TRX His-6 residue