Abstract
The chemiluminescence arising from the reaction between bis(pentachlorophenyl)oxalate (PCPO) and hydrogen peroxide in the presence of the fluor 9,10-diphenylanthracene (DPA) has been examined in detail. The effects of varying reactant, base catalyst and fluor concentrations on chemiluminescence decay rates and quantum yields have been investigated and a mechanism which accounts for the kinetics of the reaction has been proposed. The rate-determining step is a reaction between PCPO and the hydroperoxide anion (OOH–) and does not involve the fluorescent activator. The lifetime of the reactive intermediate formed in the rate-determining step is short (5 × 10–7 s) and consistent with the proposed mechanism.
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