| Summary: | 碩士 === 國立臺北科技大學 === 生物科技研究所 === 94 === PartⅠ：The Polymelatonin films have been prepared using repetitive cyclic voltammetry. Then , FAD/toluidine blue O (TBO)/Polymelatonin hybrid films were prepared by chemical of FAD and TBO on Polymelatonin films.The cyclic voltammograms recorded the deposition of the hybrid FAD/TBO/Polymelatonin films directly from the mixing of FAD, TBO and melatonin from the acidic aqueous solutions. The electrochemical quartz crystal microbalance, cyclic voltammetry, and SEM were used to study the growth mechanism of the hybrid of FAD/TBO/Polymelatonin films. The hybrid FAD/TBO/Polymelatonin films exhibited three redox couples, which corresponded to the FAD, TBO and Polymelatonin redox behavior, respectively. The electrocatalytic properties of the O2 was studied by the hybrid films in the absence or in the presence of hemoglobin or myoglobin. The electrocatalytic reduction current had been developed from the cathodic peak of the FAD redox couple.The electrocatalytic process involved an interaction of hemoglobin(or myoglobin, cytochrome C) and FAD in hybrid film to increase the electrocatalytic reduction current.The electrocatalytic reduction of O2 using the hybrid films was investigated by cyclic voltammetry, and rotating ring-disk electrode methods. The electrocatalytic oxidation of dopamine and ascorbic acid using the hybrid films were also investigated.
Part II：Copper complex dye(C.I. Direct Blue 200) modified films have been prepared using repetitive cyclic voltammetry.The cyclic voltammograms recorded the deposition of the copper complex dye films directly from the copper complex ([µ-[4-[[4''-[[7-anilino-1-hydroxy-3-sulfo-2-naftyl]diazenyl]-3,3''-.dihydroxy[1,1''-bifenyl]-4-yl]diazenyl] -3-hydroxynaphthalene-2,7-disulfonato(7-)]]dicuprate) in the acidic aqueous solutions on glassy carbon, gold, platinum and transparent semiconductor tin oxide electrodes.The electrochemical quartz crystal microbalance, cyclic voltammetry were used to study the growth mechanism of the copper complex dye films.The copper complex dye films exhibited two redox couples.The electrocatalytic oxidation of ascorbic acid and dopamine by a copper complex dye film in aqueous solution were carried out.The electrocatalytic reduction of SO52- by a copper complex dye film also found to be an electrocatalytic reduction activity.The electrocatalytic oxidation of dopamine using the films was investigated by cyclic voltammetry, and rotating ring-disk electrode methods.
Part III：Benzophenone-4 (2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid) modified films have been prepared using repetitive cyclic voltammetry.The cyclic voltammograms recorded the electrochemical properties of benzophenone-4, The cyclic voltammograms also recorded the electrochemical deposition of the benzophenone films directly from the benzophenone-4 (2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid) in the acidic aqueous solutions on glassy carbon and transparent semiconductor tin oxide electrodes.The electrochemical properties of benzophenone-4 in aqueous solutions show two groups of redox couples: an irreversible oxidation peak and a reversible redox couple with the formal potentials being pH dependent between pH 1 and 7. The cyclic voltammetry and scanning electron microscopy(SEM) were used to study the growth mechanism of the benzophenone-4 films.The electrocatalytic oxidation of ascorbic acid and dopamine by a benzophenone-4 film in aqueous solution were carried out. The electrocatalytic reduction of NO2- by a benzophenone-4 film also found to be an electrocatalytic reduction activity.The electrocatalytic oxidation of dopamine using the films was investigated by cyclic voltammetry, and rotating ring-disk electrode methods.
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