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The theory and application of bimetallic electrode systems in electrometric analysis ...Fenwick, Florence, January 1923 (has links)
Thesis (Ph. D.)--University of Michigan, 1922.
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New results in electro-analysisMcCutcheon, Thomas Potter. January 1907 (has links)
Thesis (Ph. D.)--University of Pennsylvania, 1907.
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Electrochemical studies of benzophenone and fluorenone imines, amines and diphenyldiazomethaneBarnes, James H January 2011 (has links)
Vita. / Digitized by Kansas Correctional Industries
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ELECTROCHEMICAL AND PHOTOELECTROCHEMICAL STUDIES ON WELL-DEFINED SILICON PHTHALOCYANINE STACKED-RING OLIGOMERS.MEZZA, THOMAS MICHAEL. January 1983 (has links)
The results of solution electrochemical and photoelectrochemical studies on a series of well-defined silicon phthalocyanine (SiPc) stacked-ring oligomers are presented. These molecules consist of one (monomer), two (dimer), and three (trimer) SiPc rings which are axially stacked through a O-Si-O backbone with t-butyldimethylsilyl "end cap" groups. The interplanar spacing in the dimer and trimer SiPc is about 3.4 Å which facilitates the through-space molecular orbital overlap that gives them unique spectroscopic and electrochemical properties intermediate between those observed for other systems in which the electroactive centers are non-interacting or have exclusively through-bond interaction. There is a blue-shift in both the Q- and Soret absorbance maxima which is accompanied by an increased oscillator strength as more SiPc subunits are added per molecule. In dichloromethane solution, the cyclic voltammograms of these molecules exhibit multiple, one-electron, chemically reversible oxidations and reductions. The number of oxidations and reductions observed for each molecule increases with the addition of more SiPc rings and the energy difference between successive electron transfers decreases. In addition, there is a large cathodic shift of 0.52 V in the first oxidation potential between the monomer and trimer SiPc indicating a net stabilization of the dimer and trimer towards oxidation with respect to the monomer SiPc. These electrochemical results are shown to correlate well with Ultraviolet Photoelectron Spectroscopic (UPS) and UV-visible absorption spectroscopic data and energy level diagrams for the monomer, dimer, and trimer SiPc as well as higher-order polymeric SiPc are developed. Extensive photoelectrochemical studies on SiPc-modified electrodes are also reported. The effects of the chemical nature, E⁰, and concentration of the solution redox couple, as well as the influence of changing the electrode substrate and incident light intensity and wavelength on the photoresponse characteristics of these electrodes are presented and discussed. A solid-state band model for the dyesensitization process is discussed that treats the SiPc layer as a photoconductor that is capable of causing Fermi level pinning to occur at the SiPc/SnO₂ interface, resulting in an open-circuit photovoltage of about 200 mV which is independent of the solution E⁰. A molecular model is also developed that considers the specific molecular interactions which occur between the SiPc and the substrate, between adjacent SiPc molecules in the dye layer, and between the SiPc molecules and the solution redox species. Photoexcitation of the SiPc layer results in the formation of excitons in which the excited-state is delocalized over an aggregate containing several SiPc molecules.
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Electrochemical kinetic studies in molten LiCl-KCl謝安康, Hsieh, Stephen. January 1965 (has links)
published_or_final_version / Chemistry / Master / Master of Science
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Electrochemical reduction of oxygen in the presence of methanol彭紹光, Pang, Siu-kwong. January 1995 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
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Microengineered electrochemical reactorsSong, Peng January 2015 (has links)
No description available.
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Electrochemical pretreatment of carbon electrodes and the electroanalytical applicationsShi, Kang 01 January 2000 (has links)
No description available.
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Studies on the preparation and electroanalytical applications of chemically modified electrodesSong, Fayi 01 January 2000 (has links)
No description available.
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Determination of heavy metals on macro- and micro-electrodes by adsorptive cathodic stripping voltammetry and anodic stripping voltammetryHadjichari, Andrew Michael, University of Western Sydney, School of Civic Engineering and Environment January 1999 (has links)
This thesis describes the application of macro, micro, ultra-microelectrodes and microelectrode arrays to the measurement of trace concentrations of nickel and cobalt in sediment and natural waters by adsorptive cathodic stripping voltammetric methods. In addition the measurement of tin by adsorptive cathodic stripping voltammetry in sediment and natural waters is discussed. Also, the application of macroelectrodes and microelectrode arrays to the measurement of lead, cadmium and zinc in sediment and natural waters by anodic stripping voltammetry is considered. In all cases the determination of the six metals was optimised by investigating the influence of various significant parameters, such as in-situ mercury plating, complexing agent concentration, scan rate, pulse height, accumulation time and potential, buffer concentration and pH. The results obtained for these investigations are discussed in this thesis / Doctor of Philosophy (PhD)
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