Singlet oxygen quantum yields QY2

3-Phorbinepropanoic acid, 9-acetyl-14-ethyl-13,14-dihydro-21-(methoxycarbonyl)-4,8,13,18-tetramethyl- 20-oxo-, 3,7,11,15-tetramethyl-2-hexadecenyl ester (Bacteriopheophytin a)

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovskii, A.A.
Doklady Biophys. 310(2): 6-10 (1990)

Sensitizer: 3-Phorbinepropanoic acid, 9-acetyl-14-ethyl-13,14-dihydro-21-(methoxycarbonyl)-4,8,13,18-tetramethyl- 20-oxo-, 3,7,11,15-tetramethyl-2-hexadecenyl ester (Bacteriopheophytin a)
Solvent: (C₂H₅)₂O
Oxygen concentration: air^a

Quantum yield of formation = 0.48

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; lambda_exc = 337 nm.

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovskii, A.A.
Doklady Biophys. 310(2): 6-10 (1990)

Quantum yield of formation = 0.8

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; lambda_exc = 337 nm.

Borland, C.F.; McGarvey, D.J.; Truscott, T.G.; Codgell, R.J.; Land, E.J.
J. Photochem. Photobiol., B, Biol. 1(1): 93-101 (1987)

Quantum yield of formation = 0.53*; 0.46

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.) = 0.73; meas. phi_T(S) = 0.8; lambda_exc = 347 nm. f_Delta^T = 0.6 assuming PSO2 = 0; used Proportion of T₁ quenched by O₂ = 1.

Borland, C.F.; McGarvey, D.J.; Truscott, T.G.; Codgell, R.J.; Land, E.J.
J. Photochem. Photobiol., B, Biol. 1(1): 93-101 (1987)

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 = Ac; rel. to phi_Delta(ref. sens.) = 0.73; meas. phi_T(S) = 0.73; lambda_exc = 347 nm. f_Delta^T = 0.63 assuming PSO2 = 0; used Proportion of T₁ quenched by O₂ = 1.

Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovsky, A.A.
Dokl. Biophys. 283(2): 161-3 (1985)

Quantum yield of formation = 0.75

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.) = 0.7.

Krasnovsky, A.A.,Jr.
Photochem. Photobiol. 29(1): 29-36 (1979)

Quantum yield of formation = 0.69

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

Reference sensitizer = Chl a; rel. to phi_Delta(ref. sens.) = 0.55. Proportion of T₁ quenched by O₂ = 1.

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovskii, A.A.
Doklady Biophys. 310(2): 6-10 (1990)

Quantum yield of formation = 0.36

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; lambda_exc = 337 nm. Soln. cont. 2% Triton X-100.

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovskii, A.A.
Doklady Biophys. 310(2): 6-10 (1990)

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; lambda_exc = 337 nm.

Borland, C.F.; McGarvey, D.J.; Truscott, T.G.; Codgell, R.J.; Land, E.J.
J. Photochem. Photobiol., B, Biol. 1(1): 93-101 (1987)

Quantum yield of formation = 0.2-0.3

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

Reference sensitizer = HP; rel. to phi_Delta(ref. sens.) = 0.53; meas. phi_T(S) = 0.6; lambda_exc = 347 nm. f_Delta^T = 0.4-0.5 assuming PSO2 = 0; used 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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