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  Partner: UNT Libraries
 Department: Department of Chemistry
Barbituric Acids as Anticonvulsants.  IV.  5-Substituted-Mercapto Derivatives of 5-Phenylbarbituric Acids.

Barbituric Acids as Anticonvulsants. IV. 5-Substituted-Mercapto Derivatives of 5-Phenylbarbituric Acids.

Date: 1951
Creator: Shahan, Howard Wayne
Description: This study involves compounds of the barbituric acid series are well known for their use as anesthetics and sedatives.
Contributing Partner: UNT Libraries
Interfacial Electrochemistry of Copper and Spectro-Electrochemical Characterization of Oxygen Reduction Reaction

Interfacial Electrochemistry of Copper and Spectro-Electrochemical Characterization of Oxygen Reduction Reaction

Date: August 2011
Creator: Yu, Kyle Kai-Hung
Description: The first part of this dissertation highlights the contents of the electrochemical characterization of Cu and its electroplating on Ru-based substrates. The growth of Ru native oxide does diminish the efficiency of Cu plating on Ru surface. However, the electrochemical formed irreversible Ru hydrate dioxide (RuOxHy) shows better coverage of Cu UPD. The conductive Ru oxides are directly plateable liner materials as potential diffusion barriers for the IC fabrication. The part II of this dissertation demonstrates the development of a new rapid corrosion screening methodology for effective characterization Cu bimetallic corrosion in CMP and post-CMP environments. The corrosion inhibitors and antioxidants were studied in this dissertation. In part III, a new SEC methodology was developed to study the ORR catalysts. This novel SEC cell can offer cheap, rapid optical screening results, which helps the efficient development of a better ORR catalyst. Also, the SEC method is capable for identifying the poisoning of electrocatalysts. Our data show that the RuOxHy processes several outstanding properties of ORR such as high tolerance of sulfation, high kinetic current limitation and low percentage of hydrogen peroxide.
Contributing Partner: UNT Libraries
Molecular Structure Analyses of Asymmetric Hydrocarbon Liquid Compounds in the Gas Phase Using Chirped-pulse Fourier Transform Microwave Spectroscopy: Acyl Chlorides and Perfluorinated Acyl Chlorides

Molecular Structure Analyses of Asymmetric Hydrocarbon Liquid Compounds in the Gas Phase Using Chirped-pulse Fourier Transform Microwave Spectroscopy: Acyl Chlorides and Perfluorinated Acyl Chlorides

Date: August 2011
Creator: Powoski, Robert A.
Description: Examinations of the effects of (a.) alkyl carbon chain length and (b.) perfluorination of acyl chlorides; propionyl chloride, butyryl chloride, valeroyl chloride, and perfluorinated acyl chlorides; perfluoropropionyl chloride and perfluorobutyryl chloride, are reported and compared using CP-FTMW spectroscopy. All of these molecules are already published in various journals except for valeroyl chloride. The chapters are organized by molecule alkyl chain length and include some background theory. Conformational stability, internal rotation, helicity, and ionic character of the C-Cl bond via the nuclear electric quadrupole coupling constant (χzz) are analyzed. Results show syn, syn-anti/syn-gauche, and syn-anti-anti/syn-gauche-anti stable conformations. Internal rotation was only seen in propionyl chloride. Helicity was not observed. (χzz) was observed to be inert to alkyl chain length, ~ 60 MHz and ~ 65 MHz for the nonfluorinated and fluorinated acyl chlorides. Partial fluorination and varying functional groups are recommended.
Contributing Partner: UNT Libraries
Electrochemical Quartz Crystal Microbalance Study Of Bismuth Underpotential Deposition On Ruthenium And On Electrochemically Formed Ruthenium Oxide

Electrochemical Quartz Crystal Microbalance Study Of Bismuth Underpotential Deposition On Ruthenium And On Electrochemically Formed Ruthenium Oxide

Date: December 2011
Creator: Lin, Po-Fu
Description: Kinetics and thermodynamics of bismuth (Bi) underpotential deposition (UPD) on ruthenium (Ru) and on electrochemically formed Ru oxide are studied using electrochemical quartz crystal microbalance technique. The Bi UPD and Bi bulk deposition are observed both on Ru and on electrochemically formed Ru oxide electrodes. The anodic peak potential of Bi UPD shifts slightly to positive potential as the scan rate increases. The peak current ratio (IAnode/ICathode) of Bi UPD and Bi bulk increases as the scan rate increases. Bi monolayer coverage calculated from mass (MLMass) and from charge (MLCharge) with scan rates dependent are compared both in Bi UPD region and in Bi bulk region. Stability and oxidation time effects are also investigated. Bi UPD on Ru and on electrochemically formed Ru oxide are quasi-reversible, scan rate independent, oxidation time dependent, and have higher plating efficiency on Ru. However, Bi bulk deposition on Ru and on electrochemically formed Ru oxide are quasi-reversible, scan rate dependent, oxidation time independent, and have higher plating efficiency on electrochemically formed Ru oxide. Both Bi UPD adatoms and Bi bulk are unstable in 0.5M H2SO4.
Contributing Partner: UNT Libraries
Hydantoins as Anticonvulsants. IX. 5-Alkylideniminoxy Derivatives of 5-Phenylhydantoin

Hydantoins as Anticonvulsants. IX. 5-Alkylideniminoxy Derivatives of 5-Phenylhydantoin

Date: August 1957
Creator: Shoulders, Ben Allen
Description: This thesis describes the synthesis of a series of 5-alkideniminoxy-5-phenylhydantoins for the purpose of studying their anticonvulsant properties.
Contributing Partner: UNT Libraries
Bis Ammonium Salts of Dialkylaminoalkoxypropionitriles

Bis Ammonium Salts of Dialkylaminoalkoxypropionitriles

Date: August 1957
Creator: Woods, Roy Jack
Description: This paper concerns the preparation of some bis derivatives of dialkylaminoalkoxypropionitirles from trimethylene, hexamethylene, octomethylene, and decamethylene bromides. These compounds are to be tested for curariform activity and anesthetic values by Parke, Davis and Company.
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Pyridinium Derivatives of 9,10-Endo-o-Phenylene-9,10-Dihydro-1,4-Anthraquinone

Pyridinium Derivatives of 9,10-Endo-o-Phenylene-9,10-Dihydro-1,4-Anthraquinone

Date: 1956
Creator: Maglaughlin, Edward Phillip
Description: The compounds reported here were prepared for the purpose of determining the effects of active groups on the pyridine ring, and to determine the effects of substituted methyl groups on the nucleus. These compounds are to be tested for tuberculostatic activity.
Contributing Partner: UNT Libraries
Self-diffusion of the Lead Ion in the Fused Lead Chloride System

Self-diffusion of the Lead Ion in the Fused Lead Chloride System

Date: 1957
Creator: Cureton, Wilbur Stanley
Description: The specific goal of this investigation was the determination of the self-diffusion coefficient of the divalent lead ion in a fused lead chloride system at several temperatures and the determination of the activation energy for the diffusion process.
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Synthesis of some 1-Substituted-2-Methylnaphthimidazole-4,9-Diones

Synthesis of some 1-Substituted-2-Methylnaphthimidazole-4,9-Diones

Date: August 1957
Creator: Peterson, Harold W.
Description: Imidazole derivatives of 1,4-naphthoquinones are found to have biological activity which interferes with the utilization of vitamin K or of the purines since they have groups common to these two classes of compounds. This thesis shows the preparation of some 1-substituted-naphthimidazole-4,9-diones for possible biological activity.
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The Reactions and Emission Spectra of Propylene in Electrodeless Discharge

The Reactions and Emission Spectra of Propylene in Electrodeless Discharge

Date: May 1959
Creator: Armstrong, Andrew Thurman
Description: This thesis describes the reactions and emission spectra of propylene under radio frequency energy radiation.
Contributing Partner: UNT Libraries