Four-electron electrocatalytic reduction of dioxygen to water by an ion-pair cobalt porphyrin dimer adsorbed on a glassy carbon electrode

Abstract

An ion-pair porphyrin dimer, formed by reacting the tetrachloro salt of [tetrakis(N-methylpyridyl)porphyrinato]- cobalt and the tetrasodium salt of [tetrakis(4-sulfonatophenyl)porphyrinato]cobalt, adsorbed electrochemically on a glassy carbon electrode is shown to catalytically reduce O₂ to water by four electrons.

References

1. (a) J. P. Collman, P. S. Wagenknecht and J. E. Hutchison, Angew. Chem., Int. Ed. Engl., 1994, 33, 1537; (b) J. P. Collman, P. Denisevich, Y. Konai, M. Marrocco, C. Doval and F. C. Anson, J. Am. Chem. Soc., 1980, 102, 6027; (c) R. R. Durand, C. S. Benscome, J. P. Collman and F. C. Anson, J. Am. Chem. Soc., 1983, 105, 2710; (d) J. P. Collman, N. H. Hendricks, K. Kim and C. J. Bencosme, J. Chem. Soc., Chem. Commun., 1987, 1537; (e) C. K. Chang, J. Y. Liu and I. Abdalmuhdi, J. Am. Chem. Soc., 1984, 106, 2725; (f) H. Y. Liu, M. J. Weaver, C. B. Wang and C. K. Chang, J. Electroanal. Chem., Interfacial Electrochem., 1983, 145, 439; (g) H. Y. Liu, I. Abdalmuhdi, C. K. Chang and F. C. Anson, J. Phys. Chem., 1985, 89, 665; (h) R. Karaman, S. Jeon, O. Almarsson and T. C. Bruice, J. Am. Chem. Soc., 1992, 114, 4899; (i) T. Sawaguchi, T. Matsue, K. Itaya and I. Uchida, Electrochim. Acta., 1991, 36, 703.
2. For other monomeric metalloporphyrins known to catalyze the reduction of dioxygen to water, see: F. C. Anson, C. Shi and B. Steiger, Acc. Chem. Res., 1997, 30, 437.
3. E. Ojadi, R. Selzer and H. Linschitz, J. Am. Chem. Soc., 1985, 107, 7783; H. van Willigen, U. Das, E. Ojadi and H. Linschitz, J. Am. Chem. Soc., 1985, 107, 7784; U. Hofstra, K. B. M. Koehorst and T. J. Schaafsma, Chem. Phys. Lett., 1986, 130, 555; D. K. Geiger and C. A. Kelly, Inorg. Chim. Acta., 1988, 154, 137.
4. U. Hofstra, R. B. M. Koehorst and T. J. Schaafsma, Magn. Reson. Chem., 1987, 25, 1069.
5. F. D'Souza, G. R. Deviprasad and Y.-Y. Hsieh, J. Electroanal. Chem., 1996, 411, 167; F. D'Souza, Y.-Y. Hsieh and G. R. Deviprasad, J. Electroanal. Chem., 1997, 426, 17.
6. V. G. Levich, Physicochemical Hydrodynamics, Prentice-Hall, Englewood Cliff, NJ, 1962; J. Koutecky and V. G. Levich, Zh. Fiz. Khim., 1956, 32, 1565; N. Oyama and F. C. Anson, Anal. Chem., 1980, 52, 1192.
7. A. Bettelheim and T. Kuwana, Anal. Chem., 1979, 51, 2257.