Abstract
The electropolymerization of trans-[RuCl2(vpy)(4)] (vpy=4-vinylpyridine) monomer on Nd-Fe-B magnets was studied by electrochemical impedance spectroscopy (EIS). Impedance diagrams obtained during the polymerization process were used to monitor film formation. The EIS results gave insight into the electrochemical phenomena occurring at the magnet surface as the polymerization process progressed. The film structure and morphology were also studied by X-ray photoelectron spectroscopy, scanning electron microscopy and Raman spectroscopy. The Raman spectroscopy results showed that the polymerization takes place at the vinyl groups of the monomer and also that the redox polymer structure is very similar to that of the monomer. The ratio of the intensity of the XPS peaks for fluorine (from the electrolyte PF6-) and ruthenium present in the film showed that the polymer on Nd-Fe-B contained an equal proportion of Ru2+ and Ru3+, indicating that part of the film is positively charged, i.e. {[RuCl2(vpy)(4)](+)}(n).
Original language | English |
---|---|
Pages (from-to) | 244-251 |
Number of pages | 8 |
Journal | Journal of Solid State Electrochemistry |
Volume | 8 |
DOIs | |
Publication status | Published - Mar 2004 |
Keywords
- electrochemical impedance spectroscopy poly{trans-[RuCl2(vpy)(4)]}film
- Raman spectroscopy
- X-ray photoelectron spectroscopy
- CORROSION CHARACTERIZATION
- FILMS
- TRANSPORT
- COMPLEXES
- SPECTRA
- OXIDE