Accession Number:

ADA090476

Title:

Electronic and Photoelectron Spectral Studies of Electroactive Species Attached to Silanized C and Pt Electrodes.

Descriptive Note:

Technical rept.,

Corporate Author:

NORTH CAROLINA UNIV AT CHAPEL HILL WILLIAM R KENAN JR LABS OF CHEMISTRY

Personal Author(s):

• Willman,K. W.
• Rocklin,R. D.
• Nowak,R.
• Kuo,K.-N.
• Schultz,F. A.

Report Date:

1980-09-19

Pagination or Media Count:

38.0

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-methyldichlorosilybutyryl 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 CoIIIII 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

Descriptors:

• *ELECTRODES
• *SILANES
• *PHOTOELECTRON SPECTRA
• *GLASSY CARBON
• *PLATINUM COMPOUNDS
• FLUORESCENCE
• REACTION KINETICS
• VOLTAGE
• ELECTRICAL PROPERTIES
• SILOXANES
• SURFACES
• CHEMICAL BONDS
• AMINES
• OXIDATION
• MOLECULAR PROPERTIES
• SULFURIC ACID
• FERROCENES
• PORPHYRINS

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE