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DOI: 10.1039/A904641K (Paper) Reference Section for: Chem. Commun., 1999, 1501-1502

Resolution of coupled electron transfer–ion transfer processes at liquid/liquid interfaces by visualisation of interfacial concentration profiles

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Jie Zhang, Christopher J. Slevin and Patrick R. Unwin

Abstract

A powerful approach for investigating heterogeneous electron transfer (ET) reactions at liquid/liquid (oil/water) interfaces is described and illustrated with studies of the reactions between IrCl62– or Fe(CN)63– in an aqueous phase and decamethylferrocene (DMFc) or ferrocene (Fc) in 1,2-dichloroethane (DCE).

References

  1. A. G. Volkov, D. W. Deamer, D. L. Tanelian and V. S. Markin, Liquid Interfaces in Chemistry and Biology, Wiley, New York, 1998 Search PubMed ; P. F. Barbara, T. J. Meyer and M. A. Ratner, J. Phys. Chem., 1996, 100, 13148 Search PubMed .
  2. R. B. Gennis, Biomembranes: Molecular Structure and Function, Springer-Verlag, New York, 1989 Search PubMed .
  3. J. Koryta, Electrochim. Acta, 1979, 24, 293 CrossRef CAS .
  4. M. Tsionsky, A. J. Bard and M. V. Mirkin, J. Am. Chem. Soc., 1997, 119, 10785 CrossRef CAS .
  5. J. Hanzlik, Z. Samec and J. Hovorka, J. Electroanal. Chem., 1987, 216, 303 CrossRef CAS .
  6. V. J. Cunnane, G. Geblewicz and D. J. Schiffrin, Electrochim. Acta, 1995, 44, 3005 CrossRef CAS .
  7. C. Wei, A. J. Bard and M. V. Mirkin, J. Phys. Chem., 1995, 99, 43 .
  8. Z. Ding, P. F. Brevet and H. H. Girault, Chem. Commun., 1997, 2059 RSC .
  9. T. Kakiuchi and Y. Takasu, Anal. Chem., 1994, 66, 1853 CrossRef CAS .
  10. T. Kakiuchi and Y. Takasu, J. Electroanal. Chem., 1995, 381, 5 CrossRef CAS .
  11. R. A. W. Dryfe, R. D. Webster, B. A. Coles and R. G. Compton, Chem. Commun., 1997, 779 RSC .
  12. Z. Ding, D. J. Fermin, P. F. Brevet and H. H. Girault, J. Electroanal. Chem., 1998, 458, 139 CrossRef CAS .
  13. C. J. Slevin and P. R. Unwin, Langmuir, 1997, 13, 4799 CrossRef CAS .
  14. C. J. Slevin and P. R. Unwin, Langmuir, 1999, in press Search PubMed .
  15. C. M. A. Brett and A. M. Oliveira Brett, Electrochemistry, Oxford University Press, 1993, p. 158 Search PubMed .
  16. S. Kihara, M. Suzuki, K. Ogura, S. Umetani, M. Matsui and Z. Yoshida, Anal. Chem., 1986, 58, 2954 CrossRef CAS .
  17. R. M. Allen and D. E. Williams, Faraday Discuss., 1996, 104, 281 RSC .
  18. The aqueous phase contained 0.25 mol dm–3 NaClO4 and 0.1 mol dm–3 NaCl, while the DCE phase contained 0.1 mol dm–3 tetra-n-hexylammonium perchlorate (THAP). The DCE phase contained either 1 × 10–2 mol dm–3 Fc′(droplet) or 1 × 10–3 mol dm–3 Fc′(receptor), while the aqueous phase contained 1 × 10–2 mol dm–3 Ox (droplet) or 1 × 10–3 mol dm–3 Ox (receptor). Constant composition could be assumed for the droplet, and mass transport only had to be considered for the receptor phase .
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