Thin films of metal—dibenzotetraaza[14]annulene complexes—part 4. Mechanistic reinvestigations of the electropolymerization of Ni (II) and Cu (II) complexes at an electrode surface. Sequential electrochemical formation of dimers, oligomers and polymers
✍ Scribed by Alain Deronzier; Maria-José Marques
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 609 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
The electrochemical behaviour and electropolymerization of Ni (II) and Cu (II) dibenzotetraaza[14]annulene complexes have been reinvestigated in detail in CH,CN and CH,Cl,. It appears that the corresponding electroactive polymeric films can be obtained in protonated or unprotonated forms depending on the electrochemical procedure used. Electrochemical properties of the corresponding dimeric complexes of nickel (protonated or not) have been established. The protonated dimer is probably the key species involved in the polymerization process. Formation of oligomeric Nicomplexes can be obtained by sequential oxidation of the monomer. Electropolymerization of the Cucomplex appears less efficient than that of the Ni while the electroactivity of the resulting fdms is destroyed at anodic potentials above 1 V.