Decay constant for singlet oxygen in the solvent:

Chloroform/Ethanol (50:50)

Di Mascio, P.; Sundquist, A.R.; Devasagayam, T.P.A.; Sies, H.
Methods Enzymol. 213(Carotenoids, Pt. A): 429-38 (1992)

Lifetime is 3.3 x 10–5 s
Decay rate is 3.0 x 104 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is Zn(pc)(py)2.

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