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Filtering by: Creator Jackson, Alexis M. Remove constraint Creator: Jackson, Alexis M. Committee Member Subramanian, Mas Remove constraint Committee Member: Subramanian, Mas Degree Field Chemistry Remove constraint Degree Field: Chemistry

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  • Using Computational Studies to Characterize Aqueous Metal Clusters : From Spectroscopy to Stability

    Creator:
    Wills, Lindsay A.
    Abstract:
    In this dissertation, the spectroscopic properties and thermodynamic stability of a class of materials known as metal oxo and hydroxo clusters are studied. In aqueous solutions, many metals can aggregate into discrete clusters of metals bridged by oxo or hydroxo ligands. These clusters are of particular interest to us for...
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    Dissertation
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    particular, the flat tridecamer, M13(OH)24(H2O)2415+, where M= Al3+ or Ga3+. The vibrations of the NO3

  • 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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    potential energy surface. In the presence of the 1 M acetate ions, however, bimolecular diffusion

  • New multi-functional chalcogenides for photovoltaic and thermoelectric materials

    Creator:
    Heo, Jaeseok
    Abstract:
    The subject of this PhD thesis is part of a research domain of great present interest in new semiconductor materials for photovoltaic and thermoelectric applications. This domain contains the elaboration and the study of both Cu-based chalcogenides bulk and thin-film samples, driven by materials design principles. One of the most...
    Resource Type:
    Dissertation
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    absorption spectrum of the absorber. Applying this new metric, we have formulated new Cu-M-VI system (M

  • 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...
    Resource Type:
    Dissertation
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    analyzing small-angle X-ray scattering data. Dr. Milton N. Jackson Jr. and Dolly Zhen collected dynamic

  • 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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    . (26) Sharpless, N. E.; Munday, J. S. Anal. Chem. 1957, 29, 1619–1622. (27) Jackson, M. N.; Kamunde

  • 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...
    Resource Type:
    Dissertation
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    University collected XPS in chapters 7 and 8. Milton Jackson collected DLS for chapter 8. Rose Ruther

  • 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...
    Resource Type:
    Dissertation
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    in Appendix A.3. Matti Alemayehu, John Evan Davis, Milton Jackson, Brian Lessig, Logan Smith, and