Role of Dibromomalonic Acid in the Photosensitivity of the Ru(bpy)32+-Catalyzed Belousov−Zhabotinsky Reaction
Author(s) -
Vladimir K. Vanag,
Anatol M. Zhabotinsky,
Irving R. Epstein
Publication year - 2000
Publication title -
the journal of physical chemistry a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.756
H-Index - 235
eISSN - 1520-5215
pISSN - 1089-5639
DOI - 10.1021/jp001418m
Subject(s) - belousov–zhabotinsky reaction , catalysis , photosensitivity , reaction mechanism , chemistry , photochemistry , reaction conditions , materials science , organic chemistry , optoelectronics
Dibromomalonic acid (Br2MA) oxidizes the photoexcited state of the Ru(bpy)32+ complex, producing Br2. Br2MA also reduces Ru(bpy)33+, yielding Br-. The first of these reactions has a rate proportional to [H+] and plays an important part in the mechanism of photoinhibition of the Belousov−Zhabotinsky reaction. We propose a reaction mechanism that gives good agreement with the experimental data.
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