Singlet oxygen quantum yields QY3

2,3:7,8-Dibenzopyrene-1,6-dione

Egorov, S.Yu.; Maallem, M.; Krasnovsky, A.A.,Jr.; Khachaturova, G.T.; Krichevskii, G.E.
Dokl. Phys. Chem. 315(4-6): 984-7 (1990)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: C₆H₄(CH₃)₂
Oxygen concentration: air^a

Quantum yield of formation = 0.77

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.; Maallem, M.; Krasnovsky, A.A.,Jr.; Khachaturova, G.T.; Krichevskii, G.E.
Dokl. Phys. Chem. 315(4-6): 984-7 (1990)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: CH₃CN
Oxygen concentration: air^a

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 = TPP; rel. to phi_Delta(ref. sens.) = 0.70; lambda_exc = 337 nm.

Krasnovsky, A.A.,Jr.; Khachaturova, G.T.; Bulgaru, V.V.; Polyakova, L.A.; Krichevskii, G.E.
Dokl. Phys. Chem. 285(1-3): 1151-4 (1986)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: CCl₄
Oxygen concentration: air

Quantum yield of formation = 0.7*; 0.8

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.

Egorov, S.Yu.; Maallem, M.; Krasnovsky, A.A.,Jr.; Khachaturova, G.T.; Krichevskii, G.E.
Dokl. Phys. Chem. 315(4-6): 984-7 (1990)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: EtOH
Oxygen concentration: air^a

Quantum yield of formation = 0.63

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.

Davies, A.K.; Gee, G.A.; McKellar, J.F.; Phillips, G.O.
Chem. Ind. (London) : 431-2 (1973)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: EtOH/C₆H₆
Oxygen concentration: O₂

Quantum yield of formation = 0.62

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

Singlet oxygen acceptor = Furan; lambda_exc = 365 nm.

Egorov, S.Yu.; Maallem, M.; Krasnovsky, A.A.,Jr.; Khachaturova, G.T.; Krichevskii, G.E.
Dokl. Phys. Chem. 315(4-6): 984-7 (1990)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: D₂O
Oxygen concentration: air^a

Quantum yield of formation = ~0.09

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. Aggregates present.

Egorov, S.Yu.; Maallem, M.; Krasnovsky, A.A.,Jr.; Khachaturova, G.T.; Krichevskii, G.E.
Dokl. Phys. Chem. 315(4-6): 984-7 (1990)

Sensitizer: 2,3:7,8-Dibenzopyrene-1,6-dione
Solvent: D₂O/EtOH (75:25)
Oxygen concentration: air^a

Quantum yield of formation = ~0.1

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.

^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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