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    • Keywords


      Pulse radiolysis; one-electron oxidation; toluidine blue; thiazine dyes

    • Abstract


      The one-electron oxidation of toluidine blue by specific oxidising radicals such as Cl2, Tl(II), N3, Br2 etc. has been studied by employing the pulse radiolysis technique. The Br2 radical was found to be less efficient in oxidising toluidine blue as compared to Cl2., Tl+2 and N3. The semioxidised species exhibited only onepKa 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.

    • Author Affiliations


      J Mahadevan1 S N Guha1 K Kishore1 P N Moorthy1

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

  • Journal of Chemical Sciences | News

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