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Enhanced chemiluminescence in the oxidation of luminol and an isoluminol cortisol conjugate by hydrogen peroxide in reversed micelles

✍ Scribed by Metelitza, D. I. ;Eryomin, A. N. ;Shibaev, V. A.

Publisher
John Wiley and Sons
Year
1992
Weight
422 KB
Volume
7
Category
Article
ISSN
0884-3996

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✦ Synopsis

Abstract

The chemiluminescent oxidation of luminol and an isoluminol cortisol conjugate (ABICOR) by hydrogen peroxide has been studied in cetyltrimethylammonium bromide (CTAB) reversed micelles in octane‐chloroform (1 : 1). The maximum chemiluminescence intensity of both compounds is dependent on the initial concentrations of the H~2~O~2~ and substrates, the pH value of the micelle polar phase and the H~2~O/CTAB ratio. The optimum pH ranged from 8.5 to 9.5. Under comparable conditions, the chemiluminescence intensity for luminol was 15‐fold higher than for the ABI‐COR conjugate. A mechanism of oxidation of the substrates in reversed micelles is proposed and the possible mechanisms of inhibition by the substrate and oxidant is discussed.

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