Singlet oxygen quantum yields QY2

Pheophytin a

Krasnovsky, A.A.,Jr.; Neverov, K.V.; Egorov, S.Yu.; Roeder, B.; Levald, T.
J. Photochem. Photobiol., B 5(2): 245-54 (1990)

Sensitizer: Pheophytin a
Solvent: (C₂H₅)₂O
Oxygen concentration: air

Quantum yield of formation = 0.67

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

Reference sensitizer = TPP; rel. to phi_Delta(ref. sens.) = 0.70. Proportion of T₁ quenched by O₂ = 1.

Gurinovich, G.P.; Petsol'd, O.M.; Byteva, I.M.
Biophysics (Engl. Transl.) 19(2): 249-53 (1974)

Sensitizer: Pheophytin a
Solvent: C₅H₅N
Oxygen concentration: O₂

Quantum yield of formation = 0.64

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

Singlet oxygen acceptor = H₂NCSNH₂. Used f_r^A = 2.

Dzhagarov, B.M.; Sarin, E.I.; Ganzha, V.A.; Gurinovich, G.P.
Khim. Fiz. 6(7): 919-28 (1987)

Sensitizer: Pheophytin a
Solvent: C₆H₅CH₃
Oxygen concentration: air^a

Quantum yield of formation = 0.73

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

Reference sensitizer = PdMPDME; rel. to phi_Delta(ref. sens.) = 1; lambda_exc = 347 nm.

Krasnovsky, A.A.,Jr.; Neverov, K.V.; Egorov, S.Yu.; Roeder, B.; Levald, T.
J. Photochem. Photobiol., B 5(2): 245-54 (1990)

Sensitizer: Pheophytin a
Solvent: CCl₄
Oxygen concentration: air

Quantum yield of formation = 0.71*; 0.80

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

Reference sensitizer = TPP; rel. to phi_Delta(ref. sens.) = 0.70. Proportion of T₁ quenched by O₂ = 1.

Dzhagarov, B.M.; Sarin, E.I.; Ganzha, V.A.; Gurinovich, G.P.
Khim. Fiz. 6(7): 919-28 (1987)

Sensitizer: Pheophytin a
Solvent: CH₃CN
Oxygen concentration: air^a

Quantum yield of formation = 0.85

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

Reference sensitizer = PdMPDME; rel. to phi_Delta(ref. sens.) = 1; lambda_exc = 347 nm.

Krasnovsky, A.A.,Jr.; Neverov, K.V.; Egorov, S.Yu.; Roeder, B.; Levald, T.
J. Photochem. Photobiol., B 5(2): 245-54 (1990)

Sensitizer: Pheophytin a
Solvent: D₂O/EtOH (90:10) (mic)
Oxygen concentration: air

Quantum yield of formation = 0.70

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

Reference sensitizer = H₂TPPS^4–; rel. to phi_Delta(ref. sens.) = 0.70. Proportion of T₁ quenched by O₂ = 1. Soln. cont. 2% Triton X-100.

Krasnovsky, A.A.,Jr.; Neverov, K.V.; Egorov, S.Yu.; Roeder, B.; Levald, T.
J. Photochem. Photobiol., B 5(2): 245-54 (1990)

Sensitizer: Pheophytin a
Solvent: D₂O/EtOH (95:5)
Oxygen concentration: air

Quantum yield of formation < 0.02

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

Reference sensitizer = H₂TPPS^4–; rel. to phi_Delta(ref. sens.) = 0.70. Proportion of T₁ quenched by O₂ = 1.

Krasnovsky, A.A.,Jr.; Neverov, K.V.; Egorov, S.Yu.; Roeder, B.; Levald, T.
J. Photochem. Photobiol., B 5(2): 245-54 (1990)

Sensitizer: Pheophytin a
Solvent: EtOH
Oxygen concentration: air

Quantum yield of formation = 0.60

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

Reference sensitizer = H₂TPPS^4–; rel. to phi_Delta(ref. sens.) = 0.70. Proportion of T₁ quenched by O₂ = 1.

^a Oxygen concentration not given; assumed to be air saturated.
* Values recalculated using phi_Delta(S') or f_Delta^T(S') from Table 4 or from the quoted reference.
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