Singlet oxygen quantum yields QY1_

Acetophenone, 4'-cyano-

Chattopadhyay, S.K.; Kumar, C.V.; Das, P.K.
J. Photochem. 30(1): 81-91 (1985)

Sensitizer: Acetophenone, 4'-cyano-
Solvent: C₆H₆
Oxygen concentration: O₂

Quantum yield of formation = __; 0.49^T
Fraction of T₁ yielding singlet oxygen = 0.44*; 0.49

Experimental method: pulsed laser photolysis
Data type: time resolved substrate disappearance; triplet acceptor absorbance at end-of-pulse

Reference sensitizer = BP; Singlet oxygen acceptor = DPBF; TSinglet oxygen acceptor = 1-MeNp; rel. to f_Delta^T(ref. sens.) = 0.39; meas. phi_T(S) = 1^e; lambda_exc = 337 nm. Showed Proportion of T₁ quenched by O₂ (S and S') > 0.95.

Chattopadhyay, S.K.; Kumar, C.V.; Das, P.K.
J. Photochem. 30(1): 81-91 (1985)

Sensitizer: Acetophenone, 4'-cyano-
Solvent: CH₃CN
Oxygen concentration: O₂

Quantum yield of formation = 0.76^T
Fraction of T₁ yielding singlet oxygen = 0.76

Experimental method: pulsed laser photolysis
Data type: time resolved substrate disappearance; triplet acceptor absorbance at end-of-pulse

Reference sensitizer = BP; Singlet oxygen acceptor = DPBF; TSinglet oxygen acceptor = 1-MeNp; rel. to f_Delta^T(ref. sens.) = 0.37; meas. phi_T(S) = 1^e; lambda_exc = 337 nm. Showed Proportion of T₁ quenched by O₂ (S and S') > 0.95.

^e Value of phi_T(S) measured or quoted by the authors, used in this work to calculate phi_Delta.
^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.
back...