Singlet oxygen quantum yields QY3

Diazene, 1-(2-chloro-4,6-dinitrophenyl)-2-[2-(acetylamino)-4- [N-(2-cyanoethyl)-N-(2-hydroxyethyl)amino]-5-methoxyphenyl]-

Gruen, H.; Steffen, H.; Schulte-Frohlinde, D.
J. Soc. Dyers Colour. 97(10): 430-5 (1981)

Sensitizer: Diazene, 1-(2-chloro-4,6-dinitrophenyl)-2-[2-(acetylamino)-4- [N-(2-cyanoethyl)-N-(2-hydroxyethyl)amino]-5-methoxyphenyl]-
Solvent: Dibutyl terephthalate
Oxygen concentration: air^a

Quantum yield of formation = ~0.0007

Experimental method: continuous photolysis
Data type: substrate consumption under steady-state conditions

Singlet oxygen acceptor = TPCP; lambda_exc = 589 nm. Rel. to phi_Delta(TPP) = 0.74 and phi_Delta(ZnTPP) = 0.79 in pyridine. Short lifetime indicates Proportion of T₁ quenched by O₂ < 1.

^a Oxygen concentration not given; assumed to be air saturated.
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