OSCILLATING CHEMILUMINESCENCE IN THE RU(BPY)(3)(2-CATALYZED BELOUSOV-ZHAHOTINSKY REACTION())

We report observations of some peculiar features of the oscillating ch emiluminescence in the Ru(bpy)(3)(2+)-catalyzed Belousov-Zhabotinsky r eaction in a closed system. The chemiluminescence oscillations damp ra pidly in comparison with the light absorption oscillation of Ru(bpy)(3 )(3+). The chemiluminescence efficiency is dependent on the initial co ncentrations of reactants. In addition, the shape of chemiluminescence oscillation exhibits a weak peak or a shoulder. These observations ar e discussed in relation to the oscillatory behaviors of the absorption of Ru(bpy)(3)(3+) and the formation of emitting excited state of Ru(b py)(3)(2+).