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Vol. 32 No. 8 (2020): Vol 32 Issue 8, 2020

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Study of Electron Transfer Reactions Associated with Benzyl Viologen-β-Cyclodextrin Complexation in Buffer Solution of pH 7: Equilibrium and Kinetic Aspects

https://doi.org/10.14233/ajchem.2020.22736
Shazia Perveen
Department of Chemistry, NED University of Engineering and Technology, Karachi-75270, Pakistan
https://orcid.org/0000-0002-9756-6662
Iftikhar Imam Naqvi
Department of Chemistry, University of Karachi, Karachi-75270, Pakistan
Summyia Masood
Department of Chemistry, University of Karachi, Karachi-75270, Pakistan

Corresponding Author(s) : Shazia Perveen

shaziaperveen@neduet.edu.pk

Asian Journal of Chemistry, Vol. 32 No. 8 (2020): Vol 32 Issue 8, 2020

Abstract

In this study, complex formation of benzyl viologen dication (BzV2+) with β-cyclodextrin (β-CD), in its different oxidation states, had been studied in buffer solution of pH 7, through cyclic voltammetry. In buffer solution of pH 7, extensive deposition of benzyl viologen neutral (BzVº) has been found. Further to that first redox process of BzV2+ was found reversible in buffer solution of pH 7. Benzyl viologen mono-cation (BzV+•) was found to interact with β-CD reversibly according to EC mechanism. Equilibrium constant of BzV+•-nβ-CD complex in buffer  solution of pH 7, has been calculated as 5.49 M-n. The value of n was found to be 0.2. The bimolecular rate constant for the complex formation of BzV+• with β-CD was found to be 6.44 M- ns− in buffer solution of pH 7. This study is based upon an electrochemical approach to obtain the bonding equilibrium constant, the rate constants of formation and the association numbers of the complex formed between reduced forms of viologen and β-CD. This study explore the electron transfer reaction mechanism of benzyl viologen with β-CD to extend their applications at neutral pH.

Perveen, S. ., Naqvi, I. I. ., & Masood, S. . (2020). Study of Electron Transfer Reactions Associated with Benzyl Viologen-β-Cyclodextrin Complexation in Buffer Solution of pH 7: Equilibrium and Kinetic Aspects. Asian Journal of Chemistry, 32(8), 1981–1985. https://doi.org/10.14233/ajchem.2020.22736
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References
  1. L. Michaelis and E.S. Hill, J. Gen. Physiol., 16, 859 (1933); https://doi.org/10.1085/jgp.16.6.859
  2. G.D. Watt, D. Hansen, D. Dodson, M. Andrus and D. Wheeler, Renew. Energy, 36, 1523 (2011); https://doi.org/10.1016/j.renene.2010.10.016
  3. D.R. Wheeler, J. Nichols, D. Hansen, M. Andrus, S. Choi and G.D. Watt, J. Electrochem. Soc., 156, B1201 (2009); https://doi.org/10.1149/1.3183815
  4. K.K. Park, C.W. Lee, S.Y. Oh and J.W. Park, J. Chem. Soc. Perkin Trans. I, 2356 (1990); https://doi.org/10.1039/P19900002356
  5. D. Mandler and I. Willner, J. Am. Chem. Soc., 106, 5352 (1984); https://doi.org/10.1021/ja00330a053
  6. P.M.S. Monk, The Viologens: Physicochemical Properties, Synthesis and Applications of the Salts of 4,4-Bipyridine, Wiley: Chichester (1998).
  7. D.G. Whitten, Acc. Chem. Res., 13, 83 (1980); https://doi.org/10.1021/ar50147a004
  8. K. Kalyanasundaram, Coord. Chem. Rev., 46, 159 (1982); https://doi.org/10.1016/0010-8545(82)85003-0
  9. E. Adar, Y. Degani, Z. Goren and I. Willner, J. Am. Chem. Soc., 108, 4696 (1986); https://doi.org/10.1021/ja00276a002
  10. L.A. Summers, The Bipyridinium Herbicides, Academic Press: New York, p. 449 (1980).
  11. J.H. Ross, L.O. Lim and R.I. Krieger, Drug Chem. Toxicol., 2, 193 (1979);https://doi.org/10.3109/01480547908998242
  12. R.J. Mortimer, D.R. Rosseinsky and P.M.S. Monk, Electrochromic Materials and Devices, Wiley-VCH Verlag GmbH & Co. KGaA (2015).
  13. N. Sharma and A. Baldi, Drug Deliv., 23, 739 (2016);https://doi.org/10.3109/10717544.2014.938839
  14. A. Yasuda and J. Seto, J. Appl. Electrochem., 18, 333 (1988); https://doi.org/10.1007/BF01093745
  15. A. Yasuda, H. Kondo, M. Itabashi and J. Seto, J. Electroanal. Chem., 210, 265 (1986); https://doi.org/10.1016/0022-0728(86)80579-4
  16. A.E. Kaifer, P.A. Quintela and J.M. Schuette, J. Incl. Phenom. Mol. Recognit. Chem., 7, 107 (1989); https://doi.org/10.1007/BF01112788
  17. S. Akbar, I.I. Naqvi and M. Mohammad, J. Iran. Chem. Soc., 11, 615 (2014); https://doi.org/10.1007/s13738-013-0331-4
  18. A. Yasuda, H. Mori and J. Seto, J. Appl. Electrochem., 17, 567 (1987); https://doi.org/10.1007/BF01084131
  19. K. Murugavel, Polym. Chem., 5, 5873 (2014); https://doi.org/10.1039/C4PY00718B
  20. T. Fiaz, S. Perveen and N. Fatima, J. Iran. Chem. Soc., 16, 2211 (2019);https://doi.org/10.1007/s13738-019-01688-1
  21. R.S. Nicholson and I. Shain, Anal. Chem., 36, 706 (1964); https://doi.org/10.1021/ac60210a007
  22. N. Gupta and H.L. Linschitz, J. Am. Chem. Soc., 119, 6384 (1997); https://doi.org/10.1021/ja970028j
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