Decay constant for singlet oxygen in the solvent:

N,N-Dimethylacetamide-d9

Aveline, B.; Delgado, O.; Brault, D.
J. Chem. Soc., Faraday Trans. 88(14): 1971-6 (1992)

Lifetime is 1.0 x 10–4 s
Decay rate is 9.5 x 103 s–1

Experimental method: pulsed laser photolysis, luminescence decay
Sensitizer is HVD and PPDME.

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