Singlet oxygen quantum yields QY1

1-Benzopyran-4-one, 2-phenyl- (Flavone)

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

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

Quantum yield of formation = 0.5*; 0.6^T
Fraction of T₁ yielding singlet oxygen = __; 0.7

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) = 0.9^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.
* Values recalculated using phi_Delta(S') or f_Delta^T(S') from Table 4 or from the quoted reference.
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