Intensity Oscillation of Chemiluminescence in Ferroin-Catalyzed Belousov-Zhabotinsky Reaction

Osamu Inomoto¹, Tomoyuki Ohya² and Shoichi Kai²

¹Institute of Environmental Systems, Kyushu University, Fukuoka 812-8581, Japan
²Department of Applied Physics, Kyushu University, Fukuoka 812-8581, Japan

(Received April, 2000; Accepted May 19, 2000)

Keywords: Belousov-Zhabotinsky Reaction, Chemiluminescence, Ferroin

Abstract. A weak chemiluminescence phenomenon was observed in ferroin-catalyzed Belousov-Zhabotinsky (BZ) reaction. The luminescence intensity oscillated with the self-oscillation of the visible color change and redox potential change in anti phase. A periodic signal of the luminescence was also detected even after the extinction of the self-oscillation. These results showed that the ferroin-catalyzed system has additional oscillatory reaction which concerned with photochemical processes similarly to Ru(bpy)₃²⁺-catalyzed systems.