Singlet oxygen quantum yields QY1

1-Benzopyran-4-one, 2,3-diphenyl- (3-Phenylflavone)

Bhattacharyya, K.; Ramaiah, D.; Das, P.K.; George, M.V.
J. Phys. Chem. 90(22): 5984-9 (1986)

Sensitizer: 1-Benzopyran-4-one, 2,3-diphenyl- (3-Phenylflavone)
Solvent: C₆H₆
Oxygen concentration: (0.6-5.5) x 10^-3

Quantum yield of formation = 0.4^T
Fraction of T₁ yielding singlet oxygen = 0.8

Experimental method: pulsed laser photolysis
Data type: time resolved substrate disappearance

Reference sensitizer = BP; Singlet oxygen acceptor = DPBF; rel. to phi_Delta(ref. sens.) = 0.4; meas. phi_T(S) = 0.5^f; lambda_exc = 337 nm.

^f Value of phi_T(S) measured or quoted by the authors, used in this work to calculate f_Delta^T.
^T Value corrected for 100% quenching of T₁.
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