Singlet oxygen quantum yields QY1

Anthracene, 9,10-dicyano- (DCA)

Kristiansen, M.; Scurlock, R.D.; Iu, K.-K.; Ogilby, P.R.
J. Phys. Chem. 95(13): 5190-7 (1991)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: c-C₆H₁₂
Oxygen concentration: -> infinity

Quantum yield of formation = 1.9^ST

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = Py; rel. to phi_Delta(ref. sens.) = 0.81; lambda_exc = 355 nm.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆H₆
Oxygen concentration: air

Quantum yield of formation = 0.19

Experimental method: continuous photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = TPP; rel. to phi_Delta(ref. sens.) = 0.67.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆H₆
Oxygen concentration: air

Quantum yield of formation = 0.48

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

Singlet oxygen acceptor = MDH. f_r^A = 0.30.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆H₆
Oxygen concentration: 1.45 x 10^-3

Quantum yield of formation = 0.28

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

Singlet oxygen acceptor = 2M2P. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆H₆
Oxygen concentration: 6.8 x 10^-3

Quantum yield of formation = 0.82

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

Singlet oxygen acceptor = 2M2P; lambda_exc = 334, 366 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0.

Kanner, R.C.; Foote, C.S.
J. Am. Chem. Soc. 114(2): 678-81 (1992)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆H₆
Oxygen concentration: -> infinity

Quantum yield of formation = 1.6^ST
Fraction of T₁ yielding singlet oxygen = 0.70
Fraction of S₁ yielding singlet oxygen = 0.86

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = Ac; rel. to phi_Delta(ref. sens.) = 0.84; lambda_exc = 355 nm. Used FTO2 = 1; f_Delta^T was measured using 2,5-dimethyliodobenzene enhanced intersystem crossing producing ³S* with 50% efficiency.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆D₆
Oxygen concentration: 1.45 x 10^-3

Quantum yield of formation = 0.46

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = DNT; rel. to phi_Delta(ref. sens.) = 0.98; lambda_exc = 355 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0, FTO2 = 1.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆D₆
Oxygen concentration: 6.8 x 10^-3

Quantum yield of formation = 1.1

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = DNT; rel. to phi_Delta(ref. sens.) = 0.98; lambda_exc = 355 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0, FTO2 = 1.

Albini, A.; Spreti, S.
Gazz. Chim. Ital. 115(4): 227-32 (1985)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: C₆H₆ and CH₃CN
Oxygen concentration: air and O₂

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

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

lambda_exc = 365 nm. Singlet oxygen acceptor = TME, 2M2B, or cyclohexene, Product from substrate = alkene hydroperoxides, solvent = C₆H₆ and CH₃CN.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CCl₄
Oxygen concentration: air

Quantum yield of formation = 0.15*; 0.13

Experimental method: continuous photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = TPP; Singlet oxygen acceptor = MDH; rel. to phi_Delta(ref. sens.) = 0.54.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CCl₄
Oxygen concentration: air

Quantum yield of formation = 0.16

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

Singlet oxygen acceptor = MDH. f_r^A = 0.30.

Takahashi, Y.; Wakamatsu, K.; Kikuchi, K.; Miyashi, T.
J. Phys. Org. Chem. 3(8): 509-18 (1990)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CCl₄
Oxygen concentration: O₂

Quantum yield of formation = 2^ST

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

Singlet oxygen acceptor = DPB. Proportion of T₁ quenched by O₂ = 1.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CH₃CN
Oxygen concentration: air

Quantum yield of formation = 0.23

Experimental method: continuous photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = TPP; Singlet oxygen acceptor = MDH; rel. to phi_Delta(ref. sens.) = 0.50.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CH₃CN
Oxygen concentration: air

Quantum yield of formation = 0.76

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

Singlet oxygen acceptor = MDH. f_r^A = 0.30.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CH₃CN
Oxygen concentration: 1.7 x 10^-3

Quantum yield of formation = 0.06

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

Singlet oxygen acceptor = 2M2P; lambda_exc = 334, 366 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CH₃CN
Oxygen concentration: 8.1 x 10^-3

Quantum yield of formation = 0.25

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

Singlet oxygen acceptor = 2M2P; lambda_exc = 334, 366 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0.

Kanner, R.C.; Foote, C.S.
J. Am. Chem. Soc. 114(2): 678-81 (1992)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CH₃CN
Oxygen concentration: -> infinity

Quantum yield of formation = 1.5^ST
Fraction of S₁ yielding singlet oxygen = 0.76

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = Ac; rel. to phi_Delta(ref. sens.) = 0.84; lambda_exc = 355 nm. Assumed f_Delta^T = 0.7, FTO2 = 1.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CD₃CN
Oxygen concentration: 1.7 x 10^-3

Quantum yield of formation = 0.90

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = DNT; rel. to phi_Delta(ref. sens.) = 0.62; lambda_exc = 355 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0, FTO2 = 1.

Dobrowolski, D.C.; Ogilby, P.R.; Foote, C.S.
J. Phys. Chem. 87(13): 2261-3 (1983)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CD₃CN
Oxygen concentration: 8.1 x 10^-3

Quantum yield of formation = 1.6

Experimental method: pulsed laser photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = DNT; rel. to phi_Delta(ref. sens.) = 0.62; lambda_exc = 355 nm. Used Proportion of T₁ quenched by O₂ = 1, assumed phi_T = 0, FTO2 = 1.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CHCl₃
Oxygen concentration: air

Quantum yield of formation = 0.16

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

Singlet oxygen acceptor = MDH. f_r^A = 0.30.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CHCl₃
Oxygen concentration: air

Quantum yield of formation = 0.09

Experimental method: continuous photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = TPP; Singlet oxygen acceptor = MDH; rel. to phi_Delta(ref. sens.) = 0.50.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CS₂
Oxygen concentration: air

Quantum yield of formation = 0.09

Experimental method: continuous photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = TPP; Singlet oxygen acceptor = MDH; rel. to phi_Delta(ref. sens.) = 0.51.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: CS₂
Oxygen concentration: air

Quantum yield of formation = 0.17

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

Singlet oxygen acceptor = MDH. f_r^A = 0.30.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: ClCF₂CCl₂F
Oxygen concentration: air

Quantum yield of formation = 0.14

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

Singlet oxygen acceptor = MDH. f_r^A = 0.30.

Schmidt, R.; Seikel, K.; Brauer, H.-D.
J. Phys. Chem. 93(11): 4507-11 (1989)

Sensitizer: Anthracene, 9,10-dicyano- (DCA)
Solvent: ClCF₂CCl₂F
Oxygen concentration: air

Quantum yield of formation = 0.09

Experimental method: continuous photolysis
Data type: luminescence intensity at end-of-pulse or under steady-state conditions

Reference sensitizer = TPP; Singlet oxygen acceptor = MDH; rel. to phi_Delta(ref. sens.) = 0.41.

^ST Value corrected for 100% quenching of S₁ and T₁.
* Values recalculated using phi_Delta(S') or f_Delta^T(S') from Table 4 or from the quoted reference.
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