Photoelectrochemistry of a new ruthenium complex, the Ru(II)-tris-(1,4,5,8-tetraazaphenanthrene) dication

It is shown that the excited states of Ru(TAP) 2+ 3 (TAP ≡ 1,4,5,8-tetraazaphenanthrene) and Ru(TAPMe 2) 2+ 3 (TAPMe 2 ≡ 2,7-dimethyl-1,4,5,8-tetraazaphenanthrene) are too weak reductants to be oxidized at SnO 2 electrodes. On the other hand, in the presence of a reducing agent such as hydroquinone,...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry and interfacial electrochemistry 1985-01, Vol.182 (1), p.123-132
Main Authors: Kirsh-de Mesmaeker, A., Maetens, D., Nasielski-Hinkens, R.
Format: Article
Language:English
Subjects:
Chemistry
Electrochemistry
Exact sciences and technology
General and physical chemistry
Photoelectrochemistry. Electrochemiluminescence
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Summary:It is shown that the excited states of Ru(TAP) 2+ 3 (TAP ≡ 1,4,5,8-tetraazaphenanthrene) and Ru(TAPMe 2) 2+ 3 (TAPMe 2 ≡ 2,7-dimethyl-1,4,5,8-tetraazaphenanthrene) are too weak reductants to be oxidized at SnO 2 electrodes. On the other hand, in the presence of a reducing agent such as hydroquinone, the photo-generated reduced complexes are able to inject electrons into the SnO 2 conduction band. The good agreement between the Stern-Volmer constants obtained by luminescence quenching and by photoelectrochemistry confirms this electron transfer process.
ISSN:0022-0728
DOI:10.1016/0368-1874(85)85445-9