Decay constant for singlet oxygen in the solvent:

Hexafluorobenzene

Krasnovsky, A.A.,Jr.; Foote, C.S.
J. Am. Chem. Soc. 115(14): 6013-6 (1993)

Lifetime is 5 x 10–3 s
Decay rate is 2 x 102 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is C60 or C70.

Schmidt, R.; Afshari, E.
Ber. Bunsenges. Phys. Chem. 96(6): 788-94 (1992)

Lifetime is 0.021 s
Decay rate is 48 s–1

Experimental method: modulated photolysis, luminescence decay
Sensitizer is MB, TPP or PHO
kd = 33 s–1 for [O2] <= 10–5 mol L–1.

Schmidt, R.; Brauer, H.-D.
J. Am. Chem. Soc. 109(23): 6976-81 (1987)

Lifetime is 0.025 s
Decay rate is 40 s–1

Experimental method: modulated photolysis, luminescence decay
Sensitizer is TPP.

Chou, P.-T.; Frei, H.
J. Chem. Phys. 87(7): 3843-54 (1987)

Lifetime is 3.4 x 10–3 s
Decay rate is 2.9 x 102 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is Chr
from high intensity photolysis; M = 1O2*.

Hurst, J.R.; Schuster, G.B.
J. Am. Chem. Soc. 105(18): 5756-60 (1983)

Lifetime is 3.9 x 10–3 s
Decay rate is 2.6 x 102 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is MB, RB or TPP.

Jenny, T.A.; Turro, N.J.
Tetrahedron Lett. 23(29): 2923-6 (1982)

Lifetime is 9.4 x 10–3 s
Decay rate is 1.1 x 102 s–1

Experimental method: continuous photolysis, luminescence intensity
Sensitizer is Benz[de]anthracen-7-one, phenalenone or fluorenone
rel. to kd = 4.0 x 104 s–1 in benzene.

Long, C.A.; Kearns, D.R.
J. Am. Chem. Soc. 97(8): 2018-20 (1975)

Lifetime is 6 x 10–4 s
Decay rate is 2 x 103 s–1

Experimental method: pulsed laser photolysis, substrate disappearance
Sensitizer is MB,
Substrate is DPBF, kd cor. for 1-2% MeOH content.

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