Index Catalog // ScholarsArchive@OSU

Thermodynamic characterization of graphitic oxide surfaces

Creator:: Hatch, Conrad Valoi
Resource Type:: Dissertation
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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...
Resource Type:: Dissertation
Full Text:: state photoacid (PA*) and photobase (PB*) forms of HPTS during ESPT. An intermolecular H-bond

Strategic Application of Computations to Diverse Chemical Systems

Creator:: Brueckner, Alexander C.
Abstract:: My work has focused on streamlining the study of organic compound structure, properties, and reactions by 1) understanding and using available computational software, 2) developing software packages to facilitate data manipulation as well as augment public programs, and 3) applying public and in-house developed software to further the understanding of...
Resource Type:: Dissertation
Full Text:: ). Computations were used to fragment the detector into key components to identify the origin of the H/D isotope

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...
Resource Type:: Dissertation
Full Text:: in both the ground and transition state across many branches of chemistry and life. C–H bonds

Formation of hybrid supramolecular assemblies using biological molecules and transition metals

Creator:: Smith, Rachelle M. S.
Abstract:: Naturally occurring assemblies, such as DNA and proteins, utilize intermolecular forces (i.e H-bonding and van der Waals) to assemble. Utilizing these electrostatic interactions has only just started in the past five decades to be a tool used in synthetic chemistry in what is known as supramolecular chemistry. Supramolecular chemistry has...
Resource Type:: Dissertation
Full Text:: Naturally occurring assemblies, such as DNA and proteins, utilize intermolecular forces (i.e H-bonding and

A method of analysis for tritium as hydrogen gas

Creator:: Smith, William Alton, 1921-
Resource Type:: Masters Thesis
Full Text:: cr1,1o1sm and guidance duribg the ex.perimsntal work and preparation ot this thesis. M'1". 0. H. Brtant

Preparation and analytical application of some chelating ion exchange resins

Creator:: Pennington, Lloyd Drew
Resource Type:: Dissertation
Full Text:: at OJ'&aft!C' chel. tins OOIIP~.. Dew1opaenttl b\ both or th :e • · beea ••teas:t•al, H .Ptwted 1r1

Approaches to the synthesis of trichothecenes

Creator:: Kim, No-soo
Resource Type:: Dissertation
Full Text:: and Ehrlich ascites tumor cells. 2 R1 R2 R3 R4 R5 (1) T-2 toxin 0-iVal H OAc OAc OH (2

Total synthesis of sparteine alkaloids from a common tetraoxobispidine intermediate

Creator:: Melbardis, John
Abstract:: In previous work (Blakemore et al. Org. Lett. 2005, 7, 4721; Heterocycles 2006, 70, 609), successful elaborations of the lupine alkaloids (±)-α-isosparteine (dl-2) and (±)-β-isosparteine (dl-3) were realized from a common tetraoxobispidine precursor, 3,7-diallyl -2,4,6,8-tetraoxo-3,7-diazabicyclo[3.3.1]nonane (93). Herein, the tetraoxobispidine approach to lupine alkaloids was extended to a total synthesis of...
Resource Type:: Masters Thesis
Full Text:: ). N N H H N N H H N N H H (-)-α-isosparteine (l-2)(-)-sparteine (l-1) (+)-β-isosparteine (d-3

Some stereochemical aspects of the Claisen rearrangement

Creator:: Stephenson, John Louis
Resource Type:: Dissertation
Full Text:: possible. TABLE OF CONTENTS Page INTRODUCTION . . . . . . . . . . . . . . . . . . i H ISTORICAL

Formation of alkyl-and dialkylcarbenes. The 3-cyclohexenyl carbinyl carbene system

Creator:: Crouse, Dale McClish
Abstract:: The 3-cyclohexenyl carbinyl carbene species was formed by the thermal decomposition of the p-toluenesulfonylhydrazone sodium salt and by oxidation of the hydrazone. Several oxidizing agents were studied. The products were investigated under aprotic and protic conditions and at various temperatures. The diazocompound was formed as an intermediate and found to...
Resource Type:: Masters Thesis
Full Text:: CD N H,N-Tos Carbene Carbonium ion H from solvent ) CD3C CD3 O ) CD3C CD H CD- 3

Evidence for a stepwise mechanism in the cycloreversion of rhenium diolates

Creator:: Ness, Stephanie L.
Resource Type:: Masters Thesis
Full Text:: three basic categories of metal-catalyzed olefin oxidations; these are epoxidation, C-H activation

Some studies relating to the stereochemistry of the Claisen rearrangement of cis- and trans-α ,γ- dimethylallyl phenyl ethers

Creator:: Ong, Josephine
Resource Type:: Dissertation
Full Text:: -- OH IX Cl 4H CI=CH XIV HCH=CH2 C2H5 = CICI -CH2 } OH CH3 14 á 2C/H Ce H2 A 14 2

Photochemistry of 6-alkenyl-2-cyclohexenones : synthetic studies towards precursors of ryanodol

Creator:: Wang, Bingbing
Abstract:: Regiochemistry of intramolecular [2+2] photocycloadditions of oxygenated 6-alkenyl-3-alkoxy-2-cyclohexenones is studied. Application of this methodology to construct a key intermediate [3.3.2] bicyclic skeleton of ryanodol is described as well. Irradiation of (3-butenyl)compounds 3, 11, 14 and of (4-pentenyl)compound 6 afforded exclusively the linear photoadducts 4, 12, 15 and 7 respectively. Irradiation...
Resource Type:: Masters Thesis
Full Text:: constitutes a violation of the 'rule of five". hv + crossed linear R = H 100:0 Me 71:29 iPr 58:42

Absolute stereochemistry and total synthesis of botryococcene

Creator:: Reddy, Guvvala Nagabhushana
Abstract:: Studies were carried out to determine the absolute stereochemistry of botryococcene (1). The natural product was degraded to two sets of 'y- and 8- valerolactones. All enantiomeric variations of these lactones were synthesized in optically pure form starting from (S)- and (R)-methyloxiranes. 1H NMR correlation of natural and synthetic materials...
Resource Type:: Dissertation
Full Text:: After 100 h almost all the radioactivity was recovered in the external pool. This indicates the

Synthesis of two subunits of avermectin B1a

Creator:: Dantanarayana, Anura Pathmasiri
Abstract:: Avermectins are a group of potent anthelmintic agents produced by Streptomyces avermitilis. They are active at extremely low dosages and are now in commercial use. In this study, the synthesis of two segments of avermectin B[subscript 1a] are described. The synthesis of the hexahydrobenzofuran subunit (segment A) began with the...
Resource Type:: Dissertation
Full Text:: A 2b Me Me CH 2 CH(OH) 5 Avermectin B la H Et CH=CH 6 Avermectin Bib H Me CH=CH 7 Avermectin B

Approaches to the total synthesis of verrucarol

Creator:: Hill, David E. (David Edwin) 1954-
Abstract:: Verrucarol is the sesquiterpene portion of a number of macrocyclic di- and triesters of potential medicinal importance. In this study, a novel approach to the synthesis of this fungal metabolite is presented. An A-B-C route was investigated in which C-3 and C-4 of the C-ring were emplaced using a [2+2]...
Resource Type:: Dissertation
Full Text:: trichothecenes. H 10 :- 16 2 5 HO 14 OH OOCCH:CHMe HO. 0 2 0 2 a Representative members of the group

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
Full Text:: . 2012, 1–27. [3] Murari, N. M.; Mansergh, R. H.; Huang, Y.; Kast, M. G.; Keszler, D. A.; Conley, J

The effect of hydrogen ion concentration upon the absorption of dyes by cellulose and fillers

Creator:: Kuykendall, Delman Vernon
Abstract:: The dyeing of paper is one of the most important processes in the manufacture of that material. Fully 95 percent of the paper that is produced is colored to a greater or lesser extent, and in many eases the reproduction of a shade is essential. That pH is an important...
Resource Type:: Masters Thesis
Full Text:: between about H 4.9 and 5.4. Adsorption on albolith and china clay was much greater than on alumina

Development of novel analytical methods to detect emerging contaminants in aqueous environmental matrices using large-volume injection

Creator:: Backe, Will J.
Abstract:: It is the responsibility of humans, as environmental stewards, to monitor our impact on the environment so that efforts can be made to remediate the effects of our actions and change behaviors. To better understand our environmental footprint, sensitive and simple analytical methods are needed to quantify the contaminants that...
Resource Type:: Dissertation
Full Text:: .; Buxton, H. T., Environ. Sci. Technol. 2002, 36, (6), 1202-1211. (7) Ahrens, L., J. Environ. Monitor

An approach toward the synthesis of euonyminol and cathedulin K- 19

Creator:: Shin, Hyunik
Abstract:: A synthetic approach toward the two major fragments of cathedulin K-19, euonyminol (4) and dimethyl cathate (69), was investigated. Synthesis of dimethyl cathate was accomplished in 3 steps starting from 73. Efforts directed towards the synthesis of euonyminol, a highly oxygenated dihydroagarofuran sesquiterpene, was advanced to a stage in which...
Resource Type:: Dissertation
Full Text:: cathic acid (5). Cathedulin K-19 (3) HO2C OMe MeO H O2C Scheme 1 OH OH N Cathic acid (5

A study of the chemical composition of Ca-Al-rich inclusions from the Allende Meteorite

Creator:: Conard, Roberta
Abstract:: Nine Ca-Al-rich inclusions and one olivine inclusion from Allende meteorite were studied for Ti, Al, Fe, Mg, Ca, Na, Cl, K, Sc, V, Cr, Mn, Co, Ni, Zn,Hf, W, Ir, Au, Ta, and Re -via INAA (instrumental neutron activation analysis) and REE, Ba, Sr via RNAA (radiochemical NAA). The inclusions...
Resource Type:: Masters Thesis
Full Text:: designated the inclusions containing hibonite as h, those without olivine or hibonite but containing

Bridging the Gap Between Equilibrium Properties and Ultrafast Dynamics with Time-Resolved Spectroscopy of Functional Systems

Creator:: Krueger, Taylor D.
Abstract:: Ultrafast spectroscopy has recently gained momentum as a powerful, noninvasive characterization toolset capable of studying a diverse array of samples with applications in chemistry, physics, biology, engineering, and more. Two popular ultrafast spectroscopic techniques include femtosecond transient absorption (fs-TA) and femtosecond stimulated Raman spectroscopy (FSRS). The latter of these techniques...
Resource Type:: Dissertation

Comprehensive Analysis of The Brain Metabolome Using Mass Spectrometry in Conjunction with Data Analysis Techniques

Creator:: Khorani, Mona
Abstract:: Metabolomics has recently gained momentum in biomolecule research and complements the genomics and proteomics research space. Metabolomics strives to detect, identify, and quantify all metabolites present in biological samples. In particular, biomolecular analysis using ultra-performance liquid chromatography combined with mass spectrometry (UPLC-MS) has become increasingly important for metabolomic analyses. Similarly,...
Resource Type:: Dissertation

Novel Charge Carriers for Aqueous Electrochemical Energy Storage

Creator:: Sandstrom, Sean K.
Abstract:: The continued long-term use of fossil fuels as a primary energy source has resulted in dramatic increases in greenhouse gas emissions and the associated concerns of climate change and environmental pollution. A key strategy to circumvent these issues is a global shift away from fossil fuels toward renewable energy sources....
Resource Type:: Dissertation

The chemical composition of 61 individual Allende chondrules

Creator:: Warren, Richard Gregory
Abstract:: The abundances of 12 elements, Fe, A1, Na, Ni, Cr, Mn, Co, Ca, Sc, Ir, Sm and Eu have been determined by INAA in 61 individual chondrules (0.1-100 mg) separated from five Allende (C3) meteoritic fragments ( 25g). Ti and V have been determined in 18 of these chondrules, and...
Resource Type:: Masters Thesis
Full Text:: of Chemistry Redacted for Privacy Dean of Graduate School Date thesis is presented / H/7/ Typed by

Low-Dose X-Ray Radiation Effects On the Proteomic Profiles of Hippocampus, Cortex, and Cerebellum of Contextual Fear Conditioning and Novel Object Recognition Trained Mice

Creator:: Koluda, Rony
Abstract:: Radiation exposure to the brain can occur from a variety of events, including space missions, nuclear accidents, and clinical treatments. The effects of high dose radiation are well studied, but those of lower dosage are more elusive. Decline of memory and cognition is observed in patients exposed to low dose...
Resource Type:: Masters Thesis
Full Text:: strategies. Cell Cycle, 16(13), 1266-1270. 10. Lyng, H., Landsverk, K. S., Kristiansen, E., DeAngelis, P. M

Chemical composition of layered gabbros and mineral separates from the Red Sea area

Creator:: Miller, Donald Ashley
Resource Type:: Masters Thesis
Full Text:: -h 24Na. The samples was then subjected to the scheme shown in Table 3. The radiochemical procedure

Transition Metal Oxides for Aqueous Electrochemical Energy Storage

Creator:: Jiang, Heng
Abstract:: In the 21st century, environmental deterioration is now an indisputable fact. Reliable and economically viable electricity systems based on renewable sources are urgently needed to replace the environmentally detrimental fossil fuels. The feasibility of incorporating renewable-but-intermittent solar and wind energy heavily depends on the development of cost-effective and safe technologies,...
Resource Type:: Dissertation
Full Text:: re-arranging H-bonds through water network, (b) Crystal structure of Turnbull’s blue, MII[FeIII(CN

Chemical composition studies of Oregon and Washington coastal basalts

Creator:: Hill, Dale Wayne
Abstract:: Basalts of both Eocene and Miocene age from several groups along the Oregon and Washington coasts have been analyzed for some major, minor, and trace elements using instrumental neutron activation analysis (INAA). The rare earth element (REE) patterns observed in these samples are used for comparisons within the groups studied...
Resource Type:: Masters Thesis
Full Text:: Activation Analysis. 1970. Compiled and edited by R. H. Filby, A. I. Davis, K. R. Shah, G. G. Wainscott W. A

Chemical compositional studies of marginal rift and plateau basalts from Saudi Arabia

Creator:: Coles, D. G.
Abstract:: The analysis of 64 rock samples from Saudi Arabia and three samples from the axial trough of the Red Sea has been done. Instrumental neutron activation analysis (INAA) was the analytical tool used for the analysis of at least 18 and as many as 24 elements in these 67 rock...
Resource Type:: Masters Thesis
Full Text:: physics staff were quite helpful during the experimental phase of this work. The work of Dr. H. Wakita

A study of new optical materials I. Crystal-chemical development of new optical frequency converters II. New hosts for Cr3+ luminescence and lasing

Creator:: Schaffers, Kathleen I.
Abstract:: The emphasis of this work has been in two areas of optical materials - the crystal-chemical development of new optical frequency converters and the synthesis and study of new hosts for Cr³⁺ luminescence and lasing. A simple method has been developed to identify promising frequency-doubling materials containing triangular oxoanions by...
Resource Type:: Dissertation
Full Text:: (1985). 5. R. C. Eckardt, H. Masuda, Y. X. Fan, and R. L Byer, IEEE J. Quantum Electron. 26(5), 922

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:: , A. C. Goodrich, S. H. Mishra, and S. R. Nichols, Curr. Opin. Struct. Biol. 23, 734 (2013). 3 D

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