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Filtering by: Creator Cowan, William C. Remove constraint Creator: Cowan, William C. Academic Affiliation Chemistry Remove constraint Academic Affiliation: Chemistry Decade 2010-2019 Remove constraint Decade: 2010-2019

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  • Cis-2,5-diaminobicyclo[2.2.2]octane : a novel C₂-symmetric scaffold for asymmetric catalysis

    Creator:
    Shaw, Subrata
    Abstract:
    This thesis describes the development of a new enantioselective synthetic method employing chiral cis-2,5-diaminobicyclo[2.2.2]octane-based organometallic catalysts. The significance of this new method to organic synthesis is illustrated with preparation of enantioenriched products that are transformed to important pharmaceutical agents. Chapter 1 provides a brief historical overview of asymmetric catalysis, especially...
    Resource Type:
    Dissertation
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    structures for DIANANE (26; A (side view)) and cis-2,5-diaminobicyclo[2.2.2]octane (34; B (side view) and C

  • Tuning Functional Properties of Pyrochlore and Related Oxides via Cation and Anion Substitutions

    Creator:
    Giampaoli, Gabriella C. S.
    Abstract:
    Inorganic structures play an important role in materials due to their versatility and diversity. A complete understanding of the structure of a material is vital to enhance the creation of new materials that fill voids in research. The rational design of these compounds is driven by the exploitation of structure-property...
    Resource Type:
    Dissertation
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    . William Warnes, for giving their time, and reviewing this work. Thank you to the collaborators that I

  • Synthesis and Solution Characterization of Metal-Oxo Photoresist Precursors

    Creator:
    Hutchison, Danielle C.
    Abstract:
    Metal-oxo clusters can be described as soluble pieces of metal-oxide frameworks. Currently, metal-oxo clusters are being considered as solution-based precursors for extreme ultraviolet (EUV, 13.5 nm) photoresist materials, which are a crucial component in the fabrication of microelectronic devices. Two different photoresist precursor systems have been investigated – alkyltin clusters...
    Resource Type:
    Dissertation
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    DISSERTATION OF Danielle C. Hutchison for the degree of Doctor of Philosophy in Chemistry presented on

  • The chemistry and device applications of amorphous thin-film interfaces

    Creator:
    Knutson, Christopher C.
    Abstract:
    Solid-state amorphous materials show amazing promise in thin-film electronics. The interface-to-bulk ratio of thin films makes interfacial chemistries of these systems of utmost importance. Thin films of amorphous metals, dielectrics and semiconductors have novel chemistries that are not only based upon their elemental constituent makeup, but also based upon the...
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    Dissertation
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    Christopher C. Knutson, E. William Cowell III, William Stickle, John F. Wager, Douglas A. Keszler

  • Comprehensive, Low-Cost Wicking Microfluidic Analytical Devices for Clinical Diagnostics and Environmental Analysis

    Creator:
    Bandara, Gayan C.
    Abstract:
    Analytical techniques are utilized in a wide variety of applications. Traditionally, analytical measurements are achieved by trained personnel in a laboratory setting using expensive scientific instruments, which limits their applicability in resource-limited areas and point-of-care applications. Therefore, the concept of enabling these laboratory-based qualitative and quantitative assays in microfluidic device...
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    Dissertation
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    GMF. Proper mixing occurs as the fluid transfer through the flow-through via “c

  • Excited state molecular structural evolution and chemical reactivity studied by femtosecond stimulated Raman spectroscopy

    Creator:
    Han, Fangyuan
    Abstract:
    In this dissertation, my research work on excited state dynamics of small organic molecules in solutions is presented. Using femtosecond stimulated Raman spectroscopy (FSRS) as the main experimental tool, the excited state hydrogen-bonding dynamics (ESHBD) of Coumarin 102, a common laser dye molecule, in ethanol solution is examined with <150...
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    Dissertation
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    spectator mode, i.e. the C=O stretching mode, is examined within a 600 ps time window. The excited state

  • Transition metal solar absorbers

    Creator:
    Altschul, Emmeline Beth
    Abstract:
    A new approach to the discovery of high absorbing semiconductors for solar cells was taken by working under a set of design principles and taking a systemic methodology. Three transition metal chalcogenides at varying states of development were evaluated within this framework. Iron pyrite (FeS₂) is well known to demonstrate...
    Resource Type:
    Masters Thesis
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    Appendix C – Novel Synthesis of Bi1.88Mn0.88S3.75 ................................. 79

  • Trace analysis of halogenated polycyclic aromatic hydrocarbons from an electronic waste recycling area and Guangzhou, China

    Creator:
    Gonzales, Leah R.
    Abstract:
    Halogenated Polycyclic Aromatic Hydrocarbons (X-PAHs) are ubiquitous contaminants that are thought to be generated by processes such as chemical industries and incomplete combustion, including waste incineration and electronic waste (e-waste) burning. X-PAHs are a concern for environmental and human health because they are toxic, mutagenic, and are expected to be...
    Resource Type:
    Masters Thesis
    Full Text:
    graduate committee: Dr. William Baird, Dr. Jennifer Field, and Dr. Vincent Remcho. I would also like to

  • Studies toward the total synthesis of azaspiracid-1

    Creator:
    Kuiper, Damien L.
    Abstract:
    Azaspiracid has generated an enormous amount of scientific interest in the fourteen years since its initial discovery. The structure contains a 6,5,6 bis-spiroketal, a [3.3.1] bicyclic ketal and a 6,5-spiroaminal linkage as key moieties. With 9 rings, 20 stereocenters and three alkenes, the azaspiracid immediately attracted the interest of the...
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    Dissertation
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    filled orbital on oxygen and the anti-bonding orbital of the C-O bond of the other oxygen of the ketal

  • Graphene reduced from magnesiothermic reaction

    Creator:
    Luo, Wei, Wang, Bao, Wang, Xingfeng, Stickle, William F., and Ji, Xiulei
    Abstract:
    We, for the first time, employ magnesiothermic reaction to convert microwave-irradiated graphite oxide to pure graphene. The magnesiothermic reaction raises the carbon to oxygen atomic ratio from 22.2 to 165.7 and maintains a high surface area. The new strategy demonstrates an efficient method for obtaining highly pure graphene materials.
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    Article
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    , ‡a Xingfeng Wang, a William F. Stickle, b and Xiulei Ji* a Received (in XXX, XXX) Xth

  • Photoresist and ion-exchange chemistry of HafSOx

    Creator:
    Telecky, Alan J.
    Abstract:
    The chemistry of hafnium oxide based and materials are described in the context of ion exchange and lithography. HafSOx, represented by the composition HfO₂₋[subscript x](SO₄)x, is described to possess a significant capacity towards ion exchange in acidic and basic solutions, enabling films of HafSOx to be cleanly and readily be...
    Resource Type:
    Dissertation
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    Wager, Dr. Michael Lerner, Dr. Mas Subramanian, and Dr. William Warren for the time and knowledge

  • Survival Mediated Capture and Fusion Cross Sections for Heavy Element Synthesis

    Creator:
    Yao, Liangyu
    Abstract:
    The synthesis of superheavy element evaporation residues is described by the product of the capture cross section, fusion probability, and survival probability. Capture cross sections are moderately well known. The fusion probability is the least known with many uncertainties. The formalism for the survival probability is known, but the parameters...
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    Dissertation
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    theory. c©Copyright by Liangyu Yao April 17, 2018 All Rights Reserved Survival Mediated Capture

  • Human exposure to polycyclic aromatic hydrocarbons : global cancer risk and metabolism

    Creator:
    Motorykin, Oleksii
    Abstract:
    In recent decades, there has been increased attention on human exposure to, and subsequently toxicity of, Polycyclic Aromatic Hydrocarbons (PAHs). PAHs are widespread organic pollutants and some have been shown to be toxic, carcinogenic and mutagenic. This research was focused on understanding the link between global PAH emissions and lung...
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    Dissertation
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    committee members, Dr. Jennifer Field, Dr. Claudia Maier and Dr. William Baird, Dr. Victor Hsu and Dr

  • A photoactivable microfluidic device for heavy metal ion extraction

    Creator:
    Nammoonnoy, Jintana
    Abstract:
    The development of microfluidic devices for heavy metal extraction is presented in this dissertation. Various research areas, covering subjects from photochromic compound syntheses to microchip fabrication techniques are explored to develop microfluidic devices capable of extracting heavy metal ions from drinking water. Through integration of the beneficial characteristics of both...
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    Dissertation
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    . Michael Lerner, Dr. Christopher Beaudry, and Dr. William Warnes, for their time and commitment to serve

  • Catching Ions in Superfluid Helium Droplets

    Creator:
    Chen, Lei
    Abstract:
    In this dissertation, I describe the experimental investigation of catching ions in superfluid helium droplets. The ultimate goal of our project is to build a coherent electron diffraction apparatus for atomic structure determination from oriented single macromolecules. This involves generating protein ions from electrospray ionization (ESI) and doping them in...
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    Dissertation
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    and Dr. William Warnes for their insightful comments and advice. Finally, I would like to

  • New luminescent materials and high-performance solution-processed oxide thin films

    Creator:
    Jiang, Kai
    Abstract:
    Crystals of an incongruent-melting compound, Ba₃MgSi₂O₈, were grown by the flux method and its structure was determined by single crystal X-ray diffraction methods. Ba₃MgSi₂O₈ crystallizes in trigonal space group P-3[bar]m1 with a = 5.6123(3) Å, c = 7.2667(9) Å and Z = 1. Eu²⁺ ions prefer one crystallographic Ba site...
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    Dissertation
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    = 5.6123(3) Å, c = 7.2667(9) Å and Z = 1. Eu2+ ions prefer one crystallographic Ba site in the structure

  • Exploratory Studies Within the Exotic Lyonsite Structure

    Creator:
    Tang, Joseph N.
    Abstract:
    Structure-property relationships have always underpinned the field of solid state chemistry; dependable structural descriptions are integral to understanding and controlling the physical properties of inorganic compounds old and new. While a handful of crystal structures are celebrated for their versatility, flexibility, and functionality, the existence of more exotic structures is...
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    Dissertation
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    samples were annealed between 700 and 1000 °C, resulting in green-colored pastilles. Powder X-ray

  • Novel ternary graphite intercalation compounds of alkali metal cations and amines

    Creator:
    Maluangont, Tosapol
    Abstract:
    Novel ternary graphite intercalation compounds (GICs) of alkali metal cations and a wide variety of amines have been synthesized by one-pot chemical syntheses. Alkali metals studied includes Li, Na and K. The families of amines employed are nalkylamines, branched alkylamines, and different structural isomers of diamines and polyamines. Intragallery structures...
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    Dissertation
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    . William Warnes, and Prof. Phillip Watson. The following persons have helped in different projects which

  • Structure-property relationships in oxides containing tellurium

    Creator:
    Siritanon, Theeranun
    Abstract:
    Oxides of post-transition metals often show unique structures and properties due to the presence of lone pair electrons and the diffused s orbitals. The present work focuses on synthesis and characterizations of oxides containing Te, a heavy post transition metal. New series of pyrochlore oxides of the formula Cs(M,Te)₂O₆ (M...
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    Dissertation
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    me. I also thank Dr. Michael Lerner, Dr. Janet Tate, Dr. David Roundy, and Dr. William

  • The atmospheric chemistry of particulate-bound polycyclic aromatic hydrocarbons : concentration, prediction, laboratory studies, and mutagenicity

    Creator:
    Jariyasopit, Narumol
    Abstract:
    The trans-Pacific atmospheric transport of particulate matter (PM)-bound polycyclic aromatic hydrocarbons (PAHs) to remote sites in western North America has been well documented and has triggered research questions regarding to atmospheric transformation of PM-bound PAHs and the potential impacts on human health from their inhalation exposure. In this dissertation, field...
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    Dissertation
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    . William Baird, Dr. Jennifer Field, Dr. Claudia Maier and Dr. Fredrick Prahl, Dr. Paul Ha-Yeon Cheong for

  • Enantioselective Total Syntheses of Quinolizidine Lycopodium Alkaloid Cermizine D and Cytotoxic Marine Macrolide Mandelalide A

    Creator:
    Veerasamy, Nagarathanam
    Abstract:
    The enantioselective total synthesis of quinolizidine-containing natural product cermizine D and formal syntheses of senepodine G and cermizine C has been achieved. These natural products are members of the lycopodium alkaloids, which have attracted significant attention due to their exciting biological activities and the diverse structural scaffolds. Key steps in...
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    Dissertation
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    product cermizine D and formal syntheses of senepodine G and cermizine C has been achieved. These

  • Tandem intramolecular photocycloaddition-retro-Mannich fragmentation as a route to indole and oxindole

    Creator:
    Li, Yang
    Abstract:
    Irradiation of a tryptamine linked through its side-chain nitrogen to an alkylidene malonate residue results in an intramolecular [2 + 2] cycloaddition to the indole 2,3-double bond. The resultant cyclobutane undergoes spontaneous retro-Mannich fission to produce a spiro[indoline-3,3-pyrrolenine] with relative configuration defined by the orientation of substituents in the transient...
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    Dissertation
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    cyclization that provided tetracyclic ketone 5.86 containing rings A, B, C and D of vindorosine. A

  • Rationalization and innovative design of asymmetric organocatalysts through computational investigation

    Creator:
    Johnston, Ryne Connell
    Abstract:
    My work on computing complex catalyzed organic transformations reveals that only a few subtle chemical factors, e.g. non-classical hydrogen bonding, (hyper)conjugation and steric effects, common across different catalyst manifolds are critical for catalysis and selectivity. Rational manipulation and exploitation of these factors has led to improved catalyst designs, which has...
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    Dissertation
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    in both the ground and transition state across many branches of chemistry and life. C–H bonds

  • Structure-property relationships of YbFe₂O₄-type layered transition metal oxides

    Creator:
    Grajczyk, Rosa
    Abstract:
    The structure–property relationships of solid solutions within the YbFe₂O₄ family of compounds have been studied in relation to their optical, dielectric and magnetic properties. This family of compounds is of recent interest because of the trigonal bipyramid coordination that is rarely observed in transition metal oxides. The systematic study of...
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    Dissertation
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    -xMgxO4 (M 3+ = Al, Fe, Ga) exhibited a large increase in the c lattice parameter as a result of the

  • Fundamental Studies of the Structure-Property Correlations of Na-ion and K-ion Storage in Non-Graphitic Carbon

    Creator:
    Li, Zhifei
    Abstract:
    Grid-scale energy storage systems are urgently needed to increase the flexibility and rigidity of the grid for modern society and take full advantage of the renewable green energy resources such as solar energy and wind energy. Na-ion batteries (NIBs) and K-ion batteries (KIBs) have been emerged as one of the...
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    Dissertation
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    carbon by microwave heating a low-temperature (650˚C) pre-annealed hard carbon. After a brief microwave

  • Aqueous niobium chemistry at low pH : new precursors for oxide thin films

    Creator:
    Park, Deok-Hie
    Abstract:
    Phosphate and peroxide stabilize new oxo-hydroxo niobium clusters in water at low pH. The clusters open a new chapter in aqueous niobium chemistry under acidic conditions. The clusters also produce atomically smooth, amorphous niobium oxide phosphate (NbPOx) thin films. Reaction pathways from cluster solutions to amorphous niobium oxide phosphate solids...
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    Dissertation
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    with initial idea and critical discussions as well as manuscript writing and editing. Milana C

  • Substitutional Effects on the Electromechanical Properties of Lead-free, Piezoelectric (Na₀.₅Bi₀.₅)TiO₃-BaTiO₃ (NBT-BT)

    Creator:
    McQuade, Ryan R.
    Abstract:
    This work investigates the effect of cation substitution on the properties of the lead-free, solid solution (Na₀.₅Bi₀.₅)TiO₃-BaTiO₃ (NBT-BT). Substitution into NBT-BT increases disorder and increases the relaxor ferroelectric properties. These relaxor ferroelectric materials show large piezoelectric strains that can be utilized in actuator applications. Ceramic samples were prepared using standard...
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    Dissertation
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    displayed the highest room temperature and overall dielectric permittivity (Ɛr = 6626 at 259 °C) with the

  • Poly- and perfluorinated alkyl substance release from landfills and landfill model reactors

    Creator:
    Allred, Brent McKay
    Abstract:
    Research and public concern of poly and perfluoroalkyl substances (PFASs) as environmental contaminants has increased significantly due to the increasing number of reports of their detection in humans and wildlife. PFASs have a number of commercial applications including surfactants, coatings, polymers, and levelers, which are used on consumer products like...
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    Dissertation
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    operated under methanogenic conditions at 37 °C for 273 days. An antibiotic and antimicrobial were added

  • Tracking Photoinduced Primary Events with Femtosecond Stimulated Raman Spectroscopy and Calculations

    Creator:
    Wang, Yanli
    Abstract:
    Femtosecond stimulated Raman spectroscopy (FSRS) is a powerful ultrafast technique which can track photoinduced excited state structural events on femtosecond (fs) to picosecond (ps) timescales. In addition to high temporal and spectral resolutions, FSRS provides a broad spectral window from ca. 100—2000 cm-1 for detection, enabling the direct mapping of...
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    Dissertation
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    ). ........................................................................................................... 8 Figure 1.4. Multicolor imaging with GECOs. (A to C) HeLa cells transfected with the nucleus

  • Precursor Chemistry and Film Structure and Properties via Solution Deposition

    Creator:
    Huang, Yu
    Abstract:
    Chemistry of preparing dense film from solution deposition is explored with several cases in this thesis. Surface dense structure, conversion at melting point, and ion exchange in aqueous solution are the main topics covered here for the thin films of aluminum oxide phosphate and tin dioxide. Thin film density, optical...
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    Dissertation
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    350 °C..............................................96 5.9 XRD of solution processed Cu3SbS4

  • Refractory Amorphous Metal Thin Films

    Creator:
    Olsen, Kristopher R.
    Abstract:
    Amorphous metal thin films lack the grain boundaries and dislocations present in crystalline metal films. As a result, amorphous metal films can be more mechanically robust, atomically smooth, and more resistant to chemical attack than crystalline metals. However, amorphous metals are meta-stable and subject to crystallization upon heating, thus limiting...
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    Dissertation
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    and analysis. Dr. William Stickle performed all X-ray Photoelectron Spectroscopy (XPS). All authors

  • Tracking Excited State Proton Transfer and Inhibition with Ultrafast Raman and Transient Absorption Spectroscopy

    Creator:
    Oscar, Breland G.
    Abstract:
    In this dissertation, excited state proton transfer (ESPT) and its inhibition in solution and protein environments are revealed using both femtosecond transient absorption (fs-TA) spectroscopy and femtosecond stimulated Raman spectroscopy (FSRS). Using a tunable Raman pump to enhance transient vibrational features of the photoacidic chromophore HPTS in methanol and methanol...
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    Dissertation
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    ), 13723-13728. 13. Amir, W.; Gallot, G.; Hache, F.; Bratos, S.; Leicknam, J. C.; Vuilleumier, R. Time

  • On the Properties and Characteristics of Solution Processed Hafnium Based Thin-Films from Aqueous Precursors

    Creator:
    Decker, Shawn R.
    Abstract:
    Aqueous hydroxo Hf nanoclusters enable studies to identify and codify steps in the deposition of Hf-based oxide thin films from solution precursors. HfOCl2 reacts with combinations of H2O2(aq), acids, and TMAH to produce polymetal species at high pH and low pH. X-ray scattering and spectroscopic methods reveal the nature of...
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    Dissertation
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    for mass 18 TPD spectra on film annealed for 1 hour at 250 °C………………………………………………………………….. 25

  • Deposition and characterization of transition metal oxides from aqueous solution

    Creator:
    Betterton, Sharon A.
    Abstract:
    The aqueous chemistries of two transition metal cations, Zr⁴⁺ and Nb⁵⁺, are examined and then used to develop inorganic precursor solutions. The oxides of these cations (ZrO₂ and Nb₂O₅) are deposited and characterized, and their morphological and optical properties discussed. Due to the obstacles created by niobium's aqueous chemistry, an...
    Resource Type:
    Masters Thesis
    Full Text:
    characterization in Chapter 2. Dr. William Casey, Dr. C. André Ohlin, and Dr. Eric Villa provided much of the [N

  • Preparation and Properties of Porous Carbon Materials

    Creator:
    Xing, Zhenyu
    Abstract:
    Porous carbon is indispensable in modern technology applications. It is used for energy storage, gas separation, water purification, catalyst support, and chromatography. The diversity of its applications stems from its unique properties, including high specific surface area, tunable pore volume, and chemical stability. Specifically, the large surface area provides high...
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    Dissertation
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    . Shengqian Ma for his help on BET test. I would like to thank Dr. William F. Stickle for his help on

  • The Total Kinetic Energy Release in the Fast Neutron-induced Fission of ²³²Th

    Creator:
    King, Jonathan W.
    Abstract:
    The post-emission total kinetic energy release (TKE) in the neutron induced fission of ²³²Th was measured (using white spectrum neutrons from LANSCE) for neutron energies from En = 3 to 91 MeV. In this energy range the average post-neutron total kinetic energy release decreases from 162.3 ± 0.3 at En...
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    Dissertation
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    AN ABSTRACT OF THE THESIS OF Jonathan William King for the

  • Determination of Reaction Product Cross Sections in the ¹³⁶Xe + ²⁰⁸Pb Multi-nucleon Transfer Reaction at E[subscript cm] = 450 MeV

    Creator:
    Barrett, J. Spencer
    Abstract:
    The yields of 235 projectile-like and target-like fragments from the interaction of ¹³⁶Xe with a thick target of ²⁰⁸Pb at a center-of-mass energy, E[subscript cm], of 450 MeV were measured using γ-γ-γ coincidence data from Gammasphere and off-line γ-ray spectroscopy. The results give an expansive picture of the production cross...
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    Dissertation
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    McCutchan and Alejandro Sonzagni. Thanks also goes out to Chris Chiara, Jessica Harker, and William

  • Single crystal growth, powder synthesis and characterization of layered chalcogenide semiconductors

    Creator:
    Richard, Annette Pauline
    Abstract:
    This thesis presents basic studies, including structural, optical and transport measurements, on novel chalcogenide powders and single crystals. BiCuOSe crystals have been synthesized for the first time. The crystal structure of BiCuOSe has been refined and the optical band gap has been measured to be 0.83eV. Crystal structure refinements of...
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    Dissertation
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    3.1. ii. c. Hot Press ........................................................ 56 3.1. ii

  • Exploring the Distinct Solution Behavior of Isostructural Polycoltanates

    Creator:
    Fullmer, Lauren
    Abstract:
    Polyoxometalates are a rapidly growing class of discrete metal oxide clusters with a wide range of applications including functional materials. These anionic clusters of the group V and VI transition metals are inexpensive and non-toxic. Within group V polyoxometalates, niobium and tantalum chemistry has been underdeveloped owing to their unique...
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    Dissertation
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    Information for Chapter 6………………………………………109 C. Supporting Information for Chapter 7………………………………………127 D

  • New Graphite Intercalation Chemistry with Ethers and Amines

    Creator:
    Zhang, Hanyang
    Abstract:
    Novel donor-typed ternary graphite intercalation compounds (GICs) are synthesized and characterized containing (1) pyrrolidinium cations with DMSO co-intercalates; (2) alkali metal cations with crown ether co-intercalates; and (3) alkali metal cations with polyethylene glycol co-intercalates. Structural and compositional data are obtained for the stable products. A new ether-amine co-intercalate exchange...
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    Dissertation
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    the following cations; (c) Py12.12, (d) Py1.18, (e) Py8.8, (f) Py4.8, (g) Py1.8, (h) Py4.4, and (i

  • Effects of small molecule ligands on the conformational dynamics of the Farnesoid X Receptor ligand binding domain (FXR-LBD)

    Creator:
    Yang, Liping
    Abstract:
    The Farnesoid X Receptor (FXR) is a member of the nuclear receptor superfamily of transcription factors that plays a key role in the regulation of bile acids, lipid and glucose metabolisms. The regulative function of FXR is governed by conformational changes of the ligand binding domain (LBD) upon ligand binding....
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    Dissertation
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    given by Dr. Victor Hsu. Secondly, I would like to offer my special thanks to Dr. William H. Bisson

  • Synthesis, characterization, and analysis of nitroaromatic compounds

    Creator:
    McIntosh, Melissa Luana
    Abstract:
    Nitroaromatic compounds have important chemical applications and can be found in nature as pollution sources. Synthetic nitroaromatic compounds have been used in a variety of materials including explosives, pharmaceuticals, dyes, plastics, and pesticides. These compounds can find their way into the environment through normal or improper disposal methods. Poly-aromatic compounds...
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    Masters Thesis
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    parents, William McIntosh and Karen McIntosh have encouraged me through all my successes and failures

  • The kinetic and radiolytic aspects of control of the redox speciation of neptunium in solutions of nitric acid

    Creator:
    Precek, Martin
    Abstract:
    Neptunium, with its rich redox chemistry, has a special position in the chemistry of actinides. With a decades-long history of development of aqueous separation methods for used nuclear fuel (UNF), management of neptunium remains an unresolved issue because of its not clearly defined redox speciation. Neptunium is present in two,...
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    Dissertation
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    from undergraduate researchers Kyle C. Hartig, Nathan Knapp, and Corey R. Wright. My work would not

  • Exploring the Iron Keggin Ion as a Prenucleation Cluster for Iron Oxide Nanoparticles Formation

    Creator:
    Sadeghihosseinabadi, Omid
    Abstract:
    Iron oxide materials including ferrihydrite and magnetite play essential roles in contaminant transport, pH control of surface and groundwater, and microbial activity. They have various applications ranging from data storage to cancer therapy. Recent studies showed that the NPs growth does not involve atom by atom nucleation but starts by...
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    Dissertation
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    ) Page Appendix C: Supporting Information for Chapter 4

  • Substitution Effects on the Structure and Electronic Behavior of Ternary Precious Metal Oxides

    Creator:
    Flynn, Joshua
    Abstract:
    Due to the high cost of precursor materials, complex oxides of 4d and 5d transition metals are under-studied compared to their 3d counterparts. Recent studies have shown that oxides containing heavier transition metals can exhibit exotic electronic states due to presence of strong spin-orbit coupling. The goal of this dissertation...
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    ...................................10 1.8 Projections of NaTaO3 (a 0b-c+) demonstrating the different tilting patterns observed in

  • Theoretical study of beryllium borohydride Be(BH₄)₂

    Creator:
    Alghamdi, Maha D.
    Abstract:
    Ab initio calculations using the B3LYP and CCSD(T) methods were employed in this work to explore the most stable structure of the intriguing compound Be(BH₄)₂, for which as many as seven different structures have been proposed in the literature. Use of the B3LYP density functional method with several large basis...
    Resource Type:
    Masters Thesis
    Full Text:
    electronic structure programs. For example, a UMP2/6-311G** calculation that William carried out in 1996

  • Femtosecond Stimulated Raman Studies of Excited State Structural Events

    Creator:
    Tang, Longteng
    Abstract:
    Femtosecond stimulated Raman spectroscopy (FSRS) is an ultrafast vibrational technique which allows rapid collection of Raman spectra with simultaneously high temporal and spectral resolution. With the recent development of FSRS methodology, three FSRS techniques (conventional, tunable, and anti-Stokes) have been implemented in our laboratory to dissect the excited state structural...
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    Dissertation

  • Identification, Quantification, and Risk Assessment of Polycyclic Aromatic Hydrocarbons and their Derivatives in Soil after Steam Enhanced Extraction

    Creator:
    Santiago Delgado, Lisandra
    Abstract:
    Polycyclic aromatic hydrocarbons (PAHs) are environmental contaminants produced mainly from the incomplete combustion and pyrolysis of organic matter. PAHs are among the major contaminants at over 800 Superfund sites, nationwide. Thermal remediation is used as a method to remediate soils contaminated with PAHs through the use of heat to mobilize...
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    Masters Thesis
    Full Text:
    ............................................................................................................................99 Appendix C

  • Investigation of the structural influence on the properties of functional inorganic oxides

    Creator:
    Laurita-Plankis, Geneva
    Abstract:
    While properties are extremely important from an application point of view, it is crucial to have a detailed understanding of the underlying structural influence. Once a concrete correlation between the structure and the observed property is established, rational design of novel materials with optimized properties can be realized. These optimized...
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    Dissertation
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    ..................................................9 1.6 The pyrochlore structure (c) as derived from the fluorite structure (a) by removal of one

  • Electron diffraction of molecules in superfluid helium droplets

    Creator:
    He, Yunteng
    Abstract:
    In this dissertation, I describe the experimental investigation in electron diffraction of molecules in superfluid helium droplets. The project is part of an overall scheme called ‘single molecule serial electron diffraction imaging’ (SS-EDI), with the ultimate goal of building an apparatus to determine atomic structures from oriented macromolecules. In SS-EDI,...
    Resource Type:
    Dissertation
    Full Text:
    ….………………………………………………………………….….……..95 4.8 Time profiles of the different cations C+, CHe+, Cl+ and CCl+ from the MPI-TOF recorded