Singlet oxygen quantum yields QY1

Anthracene, 9,10-diphenyl-

Wu, K.C.; Trozzolo, A.M.
J. Phys. Chem. 83(24): 3180-3 (1979)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: n-C₆H₁₄
Oxygen concentration: O₂

Quantum yield of formation = 1.1
Fraction of T₁ yielding singlet oxygen >=0.49
Fraction of S₁ yielding singlet oxygen >=0.48

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

Singlet oxygen acceptor = 2,5-DMF; lambda_exc = 313 nm. Proportion of T₁ quenched by O₂ = 1; assumed FTO2 = 1; used p_A = 1.

Brauer, H.-D.; Acs, A.; Drews, W.; Gabriel, R.; Ghaeni, S.; Schmidt, R.
J. Photochem. 25(2-4): 475-88 (1984)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: C₆H₅CH₃
Oxygen concentration: (2-9) x 10^-3

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

Singlet oxygen acceptor = S. Assumed FTO2 = 1, phi_Tf_Delta^T = 0.08.

Darmanyan, A.P.
Chem. Phys. Lett. 91(5): 396-400 (1982)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: C₆H₅CH₃
Oxygen concentration: (2-9) x 10^-3

Quantum yield of formation = 2^ST
Fraction of T₁ yielding singlet oxygen = 1
Fraction of S₁ yielding singlet oxygen = 1

Experimental method: pulsed laser photolysis
Data type: time resolved substrate disappearance; sensitizer triplet absorbance at end-of-pulse

Singlet oxygen acceptor = Rub; Triplet actinometer = S; lambda_exc = 347 nm; used k_d = 3.2 x 10⁴ s^-1, k_A = 2.5 x 10⁷ L mol^-1 s^-1, epsilon_T(AC) = 12,000 L mol^-1 cm^-1 at 450 nm. Proportion of T₁ quenched by O₂ = 1; measured n_Delta = 2, thus FTO2 = 1.

Stevens, B.; Mills, L.E.
Chem. Phys. Lett. 15(3): 381-2 (1972)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: C₆H₆
Oxygen concentration: air

Quantum yield of formation = 0.13^T
Fraction of T₁ yielding singlet oxygen = 1

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

Singlet oxygen acceptor = S; lambda_exc = 436 nm. PSO2 = 0; measured phi_Tf_Delta^T = 0.13.

Stevens, B.; Mills, L.E.
Chem. Phys. Lett. 15(3): 381-2 (1972)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: C₆H₆
Oxygen concentration: air^a

Quantum yield of formation = 1^ST

Experimental method: continuous photolysis
Data type: product appearance under steady-state conditions

Singlet oxygen acceptor = S; lambda_exc = 436 nm. PSO2 = 1, measured f_Delta^T + f_Delta^SFTO2 = 1.

Bowen, E.J.
Discuss. Faraday Soc. (14): l43-6 (1953)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: CCl₄
Oxygen concentration: O₂

Quantum yield of formation = 0.75

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

Singlet oxygen acceptor = S; lambda_exc = 365 nm.

Bowen, E.J.
Discuss. Faraday Soc. (14): l43-6 (1953)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: CHCl₃
Oxygen concentration: O₂

Quantum yield of formation = 0.69

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

Singlet oxygen acceptor = S; lambda_exc = 365 nm.

Bowen, E.J.
Discuss. Faraday Soc. (14): l43-6 (1953)

Sensitizer: Anthracene, 9,10-diphenyl-
Solvent: CS₂
Oxygen concentration: O₂

Quantum yield of formation = 1.8

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

Singlet oxygen acceptor = S; lambda_exc = 365 nm.

^a Oxygen concentration not given; assumed to be air saturated.
^T Value corrected for 100% quenching of T₁.
^ST Value corrected for 100% quenching of S₁ and T₁.
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