Preparation and transport properties of anion-exchange membranes containing viologen moieties as anion-exchange groups in the presence or absence of photoirradiation

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Toshikatsu Sata, Yousuke Matsuo, Takanori Yamaguchi and Koji Matsusaki


Abstract

Anion-exchange membranes containing viologen groups have been prepared from chloromethylstyrene and divinylbenzene copolymer membranes and 4,4′-bipyridine. The viologen moieties were reduced by photoirradiation to form radical monocations and biradicals in pure water and various salt solutions. As the viologen moiety was changed from a divalent to a monovalent cation and to an uncharged group upon photoirradiation, the transport numbers of sulfate, bromide, nitrate and fluoride ions, decreased relative to chloride ions. After oxidation of the reduced viologen group of the membranes with air, the transport properties of anions through the membrane became the same as before photoirradiation. The transport properties of the membranes changed reversibly between photoirradiation (reduced form) and oxidation of the reduced form. The decrease in the transport numbers of the various anions relative to chloride ions is due to a sieving effect because of the shrinkage of the polymer network due to a decrease in the charge density of the anion-exchange membranes. The decrease in the pore size of the membrane upon photoirradiation was also confirmed by the decrease in the permeability coefficient of a neutral molecule, urea.


References

  1. Saishin Bunri Kinoumaku (Recent Functional Separation Membranes), ed. T. Nakagawa, CMC Corp., Tokyo, 1987, pp. 53, 246 Search PubMed.
  2. Y. Onoue, Y. Mizutani, R. Yamane and Y. Takasaki, Denki Kagaku, 1961, 29, 544 Search PubMed.
  3. T. Sata, R. Yamane and Y. Mizutani, J. Polym. Sci., Polym. Chem. Ed., 1979, 17, 2071 CrossRef CAS; T. Sata, T. Yamaguchi and K. Matsusaki, J. Membr. Sci., 1995, 100, 229 CrossRef CAS.
  4. T. Sata, T. Yamaguchi and K. Matsusaki, J. Phys. Chem., 1995, 99, 12875 CrossRef CAS.
  5. S. Shinkai, K. Shigematsu, Y. Kusano and O. Manabe, J. Chem. Soc., Perkin Trans. 1, 1981, 3279 RSC; S. Shinkai, M. Ishihara, K. Ueda and O. Manabe, J. Chem. Soc., Perkin Trans. 2, 1985, 511 RSC.
  6. J. Anzai, H. Sasaki, K. Shimokawa, A. Ueno and T. Osa, Nippon Kagaku Kaishi, 1984, 338 Search PubMed.
  7. A. Kumano, O. Niwa, T. Kajiyama, M. Takayanagi, K. Kano and S. Shinkai, Chem. Lett., 1983, 1327 CAS.
  8. T. Shimizdu and M. Yoshikawa, J. Membr. Sci., 1983, 13, 1 CrossRef CAS.
  9. M. Yamana and T. Kawata, Nippon Kagaku Zashi, 1977, 941 Search PubMed; H. Miyata, Y. Sugahara, K. Kuroda and C. Kato, J. Chem. Soc., Faraday Trans. 1, 1987, 83, 1851 RSC.
  10. H. D. Abruña and A. J. Bard, J. Am. Chem. Soc., 1981, 103, 6898 CrossRef CAS.
  11. M. Furue, S. Yamanaka, L. Phat and S. Nozakura, J. Polym. Sci., Polym. Chem. Ed., 1981, 19, 2635 CrossRef CAS.
  12. C. Stradowski, J. Appl. Polym. Sci., 1990, 41, 2511 CrossRef CAS; B. Maiti and S. Schlick, Chem. Mater., 1992, 4, 458 CrossRef CAS.
  13. H. Akahoshi, S. Toshima and K. Itaya, J. Phys. Chem., 1981, 85, 818 CrossRef; H. Chang, M. Osawa, T. Matsue and I. Uchida, J. Chem. Soc., Chem. Commun., 1991, 611 RSC; A. Walcarius, L. Lamberts and E. G. Derquane, Electrochim. Acta, 1993, 38, 2257 CrossRef CAS; T. Saita, T. Iyoda and T. Shimidzu, Bull. Chem. Soc., Jpn., 1993, 66, 2054.
  14. H. Kamogawa, K. Kikushima and M. Nanasawa, J. Polym. Sci., Polym. Chem. Ed., 1989, 27, 393 CrossRef CAS.
  15. K. Ageishi, T. Endo and O. Okawara, Macromolecules, 1983, 16, 884 CrossRef CAS.
  16. T. Sata, J. Colloid Interface Sci., 1996, 181, 275 CrossRef CAS.
  17. F. Liu, X. Yu and S. Li, Eur. Polym. J., 1994, 30, 289, 689.
  18. T. Sata, K. Teshima and T. Yamaguchi, J. Polym. Sci., Polym. Chem. Ed., 1996, 34, 1475 CrossRef CAS.
  19. P. Zschocke and D. Quellmatz, J. Membr. Sci., 1985, 22, 325 CrossRef CAS.
  20. T. Sata, M. Tsujimoto, T. Yamaguchi and K. Matsusaki, J. Membr. Sci., 1996, 112, 162 CrossRef CAS.
  21. L. Hammarström, M. Almgren, A. Lind, G. Merényi, T. Norrby and B. Åkermark, J. Phys. Chem., 1993, 97, 10083 CrossRef.
  22. T. Sata, J. Membr. Sci., 1996, 118, 121 CrossRef CAS.
  23. H. Ohtaki, Hydration of Ions, Kyoritsu Shuppan Co., Ltd., Tokyo, 1992, p. 20 Search PubMed.
  24. H. D. Abruña and A. J. Bard, J. Am. Chem. Soc., 1981, 103, 6898 CrossRef CAS.
  25. W. H. Hamill, J. Chem. Phys., 1968, 49, 2446 CrossRef CAS.
  26. Z. Kuri, Radiation Chemistry, Kyrittsu Shuppan, Tokyo, 1979, p. 57 Search PubMed.
  27. K. Tanigaki, M. Suzuki, Y. Saotome and Y. Ohnishi, J. Electrochem. Soc., 1985, 132, 1678 CAS.
  28. I. Inoue, T. Tanaka and T. Yamabe, Nihon Kagakukai Shi, 1962, 83, 1161 Search PubMed.
  29. Kagagu Binran, Kiso-hen (Handbook of Chemistry, Basic Volume), 4th edn., The Chemical Society of Japan, Tokyo, 1993, p. 455 Search PubMed.
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