TY - JOUR
T1 - An iridium-bipyridine complex as a photosensitizer for the bromide oxidation to bromine by oxygen
AU - Slama-Schwok, Anny
AU - Gershuni, Shlomo
AU - Rabani, Joseph
AU - Cohen, Haim
AU - Meyerstein, Dan
PY - 1985
Y1 - 1985
N2 - An iridium(III)-bipyridine complex, [Ir(C3,N′-bpy)(bpy)2]2+, was used as a photosensitizer in aqueous bromide solutions. Steady-state photolysis of oxygenated solutions by near-ultraviolet and visible light produces equal concentrations of Br3- and H2O2. The quantum yield of Br3- equivalents depends on pH, illumination dose, and bromide concentration. The initial yield (extrapolated) reaches a value of 0.08. A mechanism involving two exciplexes and the transients Br2-· and HO2 is proposed, based on products analysis, steady-state emission, and pulsed laser experiments.
AB - An iridium(III)-bipyridine complex, [Ir(C3,N′-bpy)(bpy)2]2+, was used as a photosensitizer in aqueous bromide solutions. Steady-state photolysis of oxygenated solutions by near-ultraviolet and visible light produces equal concentrations of Br3- and H2O2. The quantum yield of Br3- equivalents depends on pH, illumination dose, and bromide concentration. The initial yield (extrapolated) reaches a value of 0.08. A mechanism involving two exciplexes and the transients Br2-· and HO2 is proposed, based on products analysis, steady-state emission, and pulsed laser experiments.
UR - http://www.scopus.com/inward/record.url?scp=0011765351&partnerID=8YFLogxK
U2 - 10.1021/j100258a007
DO - 10.1021/j100258a007
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AN - SCOPUS:0011765351
SN - 0022-3654
VL - 89
SP - 2460
EP - 2464
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
IS - 12
ER -