Singlet oxygen quantum yields QY3

Dihematoporphyrin ester

Keene, J.P.; Kessel, D.; Land, E.J.; Redmond, R.W.; Truscott, T.G.
Photochem. Photobiol. 43(2): 117-20 (1986)

Sensitizer: Dihematoporphyrin ester
Solvent: D₂O
Oxygen concentration: O₂

Quantum yield of formation = 0.4

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.) = 0.4^b; lambda_exc = 355 nm.

Keene, J.P.; Kessel, D.; Land, E.J.; Redmond, R.W.; Truscott, T.G.
Photochem. Photobiol. 43(2): 117-20 (1986)

Sensitizer: Dihematoporphyrin ester
Solvent: D₂O (mic)
Oxygen concentration: O₂

Quantum yield of formation = 0.6

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.) = 0.4^b; lambda_exc = 355 nm. Soln. cont. 0.01 mol L^-1 CTAB.

Truscott, T.G.
J. Chem. Soc., Faraday Trans. 2 82(12): 2177-81 (1986)

Sensitizer: Dihematoporphyrin ester
Solvent: D₂O (mic)
Oxygen concentration: air^a

Quantum yield of formation = 0.29

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.) = 0.67; meas. phi_T(S) = 0.90; lambda_exc = 347 nm. Proportion of T₁ quenched by O₂ = 1; CTAB micelles; detd. mol. wt. of DHE of = 4200.

Keir, W.F.; Land, E.J.; MacLennan, A.H.; McGarvey, D.J.; Truscott, T.G.
Photochem. Photobiol. 46(5): 587-9 (1987)

Sensitizer: Dihematoporphyrin ester
Solvent: MeOD
Oxygen concentration: air^a

Quantum yield of formation = 0.30

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.) = 0.64; lambda_exc = 347 nm. Reported phi_Delta = 0.25, using phi_Delta(ref. sens.) = 0.53; recalcd. using phi_Delta(ref. sens.) from [88Z155]; detd. mol. wt. of DHE of = 4200.

^a Oxygen concentration not given; assumed to be air saturated.
^b Value of phi_Delta(S') used in this work to calculate phi_Delta(S) from authors'reported phi_Delta(S)/phi_Delta(S').
back...