Electronic and Photoelectron Spectral Studies of Electroactive Species Attached to Silanized C and Pt Electrodes.
K. W. Willman, R. Rocklin, R. Nowak, K. Kuo +2
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100% confidenceMES research in electrode, bacteria. Abstract : Depending on silanization reaction conditions, aminophenylferrocene and tetrakis (p-amino...
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Abstract
Depending on silanization reaction conditions, aminophenylferrocene and tetrakis (p-aminophenyl) porphyrin can be covalently attached in monolayer or multi-molecular layer quantities to glassy carbon and superficially oxidized Pt electrodes using 4-(methyldichlorosily)butyryl chloride. This study applies various spectroscopies to surface structure of the attached porphyrin: XPS (number of surface amide bonds), fluorescence (quantity of porphyrin attached to a siloxane polymer film compared to quantity of electroactive porphyrin), and reflectance spectroscopies (spectroelectrochemical observation of oxidation state changes with electrode under potential control, including an electrochemically silent Co(III/II) porphyrin reaction). Electroactive films 500 monolayers thick can be prepared from the ferrocene by spin coating reactive silane; in aqueous sulfuric acid voltammetry of these films indicates a phase-like property. (Author)
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- Journal
- Journal of the American Chemical Society
- Year
- 1980