Photocurrent measurements associated with heterogeneous quenching of zinc porphyrins

Article Abstract:

A study was conducted to analyze photocurrent responses related to the heterogeneous quenching of water-soluble zinc tetrakis-(carboxyphenyl)porphyrin by ferrocene and diferrocenylethane at the water/1,2-dichloroethane interface. The electrolyte solutions were made from analytical grade reagents. Experimental results indicated that the porphyrin adsorption supported a Langmuir behavior and that the surface coverage correlated with the applied potential.

Oxidation-reduction reaction, Oxidation-reduction reactions, Surface chemistry, Electrolytes, Zinc compounds

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A kinetic model for adsorption and transfer of ionic species at polarized liquid/liquid interface as studied by potential modulated fluorescence spectroscopy

Article Abstract:

Fundamental expressions for analyzing potential modulated fluorescence (PMF) responses were derived within the framework of a phenomenological model for adsorption and transfer of ionic species across polarized liquid/liquid interfaces. Studies performed at various Galvani potential differences clearly confirm that the adsorption can take place at two distinctive planes located at the aqueous and organic sides of the interface.

Usage, Observations, Liquids, Ionic solutions, Dynamics, Dynamics (Mechanics), Fluorescence spectroscopy

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Adsorption behavior of charged zinc porphyrins at the water/1,2-dichloroethane interface studied by potential modulated fluorescence spectroscopy

Article Abstract:

The adsorption properties of ionic fluorescent dyes at the polarized water/1,2-dichloroethane interface are studied by potential modulated fluorescence (PMF) spectroscopy under total internal reflection. Analysis of the frequency-dependent fluorescence associated with modulation of the interfacial concentration of the ionic dyes proved to be rather sensitive approach for separating interfacial phenomena from bulk responses.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Porphyrins, Ethylene Dichloride, Electric properties, Zinc, Chemistry, Physical and theoretical, Physical chemistry

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