In situ laser Raman spectra of iron phthalocyanine adsorbed on copper and gold electrodes. [Electronic structure]

Journal Article · Sat Jan 01 00:00:00 EST 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100241a033· OSTI ID:7051622

Melendres, C A; Rios, C B; Feng, X; McMasters, R

Raman spectra of iron phthalocyanine (FePc) and its tetrasulfonated derivative (FeTSPc) adsorbed on copper and gold electrodes have been observed in situ in 0.05 M H/sub 2/SO/sub 4/ solution. Results confirm the authors previous finding on the coordination of FePc to water molecules to solution. Evidence suggests that the iron phthalocyanines are probably oriented with their planes parallel to the electrode surface even in immersed electrodes. A decrease in intensity and broadening of some vibrational bands are observed on increasing cathodic polarization; these are attributed to a lifting of the degeneracy of the vibrational modes due to a change in symmetry of the adsorbed molecules brought about by polarization induced by the double-layer field. The effect of carbon on the Raman spectra is discussed. The iron phthalocyanines appear to be stable at potentials close to hydrogen evolution in the absence of oxygen. 18 references, 8 figures.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 7051622
• Journal Information: J. Phys. Chem.; (United States), Vol. 87:18
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPPER
SORPTIVE PROPERTIES
GOLD
IRON COMPLEXES
ADSORPTION
ELECTRONIC STRUCTURE
VOLTAMETRY
AQUEOUS SOLUTIONS
DERIVATIZATION
ELECTRODES
EXPERIMENTAL DATA
HYDRATION
LASER SPECTROSCOPY
PHTHALOCYANINES
RAMAN SPECTRA
SULFONATES
SULFURIC ACID
CHEMICAL REACTIONS
COMPLEXES
DATA
DISPERSIONS
DYES
ELEMENTS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
METALS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
SOLUTIONS
SOLVATION
SORPTION
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
400201 - Chemical & Physicochemical Properties
400400 - Electrochemistry