High Energy Chemistry

, Volume 39, Issue 2, pp 100–105 | Cite as

Photoinduced chemiluminescence in salicylaldehyde hydrazone solution

  • Yu. B. Tsaplev


Simultaneously with the chemiluminescent reaction of salicylaldehyde hydrazone (G) oxidation by hypochlorite, the competing chemiluminescent reaction of G with the hydroxide ion occurs in alkaline media. The former reaction is accompanied by green chemiluminescence, whereas the latter, with blue chemiluminescence. The estimation of the rate constant for the bimolecular reaction G + OH gives the value ∼2×105 l mol−1 s−1. The necessary condition for appearance of chemiluminescence upon interaction of G with OH is the preliminary illumination of the solution of G with light at a wavelength of 400–540 nm, which is accompanied by the formation of an acoplanar quinonoid isomer of G interacting with the hydroxide ion. The height of the energetic barrier for transition of G molecules from the “illuminated” to the “dark” state is ∼ 18 kcal mol−1.


Oxidation Physical Chemistry Hydroxide Hypochlorite Alkaline Medium 
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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • Yu. B. Tsaplev
    • 1
  1. 1.Emanuel’ Institute of Biochemical PhysicsRussian Academy of SciencesMoscowRussia

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