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One-electron oxidation of toluidine blue. A pulse radiolysis study

  • Physical and Theoretical
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Abstract

The one-electron oxidation of toluidine blue by specific oxidising radicals such as Cl −2 , Tl(II), N3, Br −2 etc. has been studied by employing the pulse radiolysis technique. The Br −2 radical was found to be less efficient in oxidising toluidine blue as compared to Cl −2 ., Tl+2 and N3. The semioxidised species exhibited only onepK a indicating the presence of two conjugate acid-base forms whose spectral and kinetic features were evaluated. Reaction of OH radicals with the dye gave rise to a transient species which exhibited spectral and kinetic features different from that of the semioxidised species indicating that the mode of reaction of OH is different.

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Authors and Affiliations

  1. Chemistry Division, Bhabha Atomic Research Centre, 400 085, Bombay, India

    J Mahadevan, S N Guha, K Kishore & P N Moorthy

Authors
  1. J Mahadevan
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  2. S N Guha
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  3. K Kishore
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  4. P N Moorthy
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Mahadevan, J., Guha, S.N., Kishore, K. et al. One-electron oxidation of toluidine blue. A pulse radiolysis study. Proc. Indian Acad. Sci. (Chem. Sci.) 102, 147–157 (1990). https://doi.org/10.1007/BF02860152

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  • DOI: https://doi.org/10.1007/BF02860152

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