Photoelectrochemical transduction between ionic and electronic conduction mediated by bis(maleonitriledithiolato)nickelate(II) in a polyviologen film

• Published in: Canadian journal of chemistry Vol. 69; no. 8; pp. 1233 - 1237
• Main Authors: Lefebvre, Mark C, Biro, David A, Langford, Cooper H
• Format: Journal Article
• Language: English
• Published: Ottawa, Canada NRC Research Press 01.08.1991; National Research Council of Canada
• Subjects: Chemistry; Electrochemistry; Exact sciences and technology; General and physical chemistry; Photoelectrochemistry. Electrochemiluminescence; Photoelectrochemistry; Hexacyanoferrates; Nitrile; Dithiol; Nitrogen heterocycle; Iminium compounds; Organic ligand; Chemical mediator; Transition metal Complexes; Experimental study; Electrodes; Redox couple; Six membered ring; Transduction; Modified material; Nickel II Complexes
• ISSN: 0008-4042; 1480-3291
• DOI: 10.1139/v91-184

The photoelectrochemistry of a polymer coated electrode exploiting the chromophore bis(maleonitriledithiolato)nickelate(II) to link the redox self-exchange conductor poly(xylylviologen) to the solution couple Fe(CN) 6 3−/4− is described. The diffusion coefficient for the Fe(CN) 6 3−/4− redox couple in the film is 4.2 × 10 −9  cm 2 /s. The system was developed in an attempt to improve on a system where a quaternary ammonium substituted polystyrene/polyvinylpyridine blend films functioned as a good ionic conductor but poor electronic conductor in consequence of the trap states. The expected improvement in electronic conductivity is seen but at the expense of lower ionic mobility. Key words: polyviologen, bis(maleonitriledithiolato)nickelate(II), polymer conduction, photoelectrode.