Singlet oxygen quantum yields QY1

1-Benzopyran-4-one, 3-hydroxy-2-phenyl- (3-Hydroxyflavone)

Brewer, W.E.; Studer, S.L.; Standiford, M.; Chou, P.-T.
J. Phys. Chem. 93(16): 6088-94 (1989)

Sensitizer: 1-Benzopyran-4-one, 3-hydroxy-2-phenyl- (3-Hydroxyflavone)
Solvent: n-C₇H₁₆
Oxygen concentration: 2.3 x 10^-3

Quantum yield of formation = 0.18

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

Reference sensitizer = Np; TD = BP; rel. to f_Delta^T(ref. sens.) = 1.0; lambda_exc = 355 nm. Proportion of T₁ quenched by O₂ = 1, phi_et = 1.