Decay constant for singlet oxygen in the solvent:

Benzene-d6/Benzene (95:5)

Studer, S.L.; Brewer, W.E.; Martinez, M.L.; Chou, P.-T.
J. Am. Chem. Soc. 111(19): 7643-4 (1989)

Lifetime is 2.5 x 10–4 s
Decay rate is 4.0 x 103 s–1

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

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