Os(bpy)32+

excited state quenched by O2
Lin, C.-T.; Sutin, N.
J. Phys. Chem. 80: 97-105 (1976)

Os(bpy)32+ quenched by O2 at conc. <= 0.0015 mol L–1
Solvent : H2O, 25ºC

kq = 5.2 x 109(L mol–1 s–1)


Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.019 micro sec. (spark lamp, luminescence, single photon counting)

Demas, J.N.; Harris, E.W.; McBride, R.P.
J. Am. Chem. Soc. 99: 3547-51 (1977)

Os(bpy)32+ quenched by O2
Solvent : MeOH

kq = 4.5 x 109(L mol–1 s–1)

Mechanism: energy transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.049 micro sec. (75F657)

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