a-(4-Pyridyl 1-oxide)-N-tert-butylnitrone Singlet oxygen

Harbour, J.R.; Issler, S.L.; Hair, M.L.
J. Am. Chem. Soc. 102, 7778-7779 (1980)

Reaction: 4-POBN + ¹O₂^* ® products and/or physical quenching
Solvent: H₂O

k = 1.2 × 10⁸(L mol^-1 s^-1), k_ind = 1.5 × 10⁹(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: oxygen consumption
Data type: Derived from steady state measurements

Photosensitizer = Methylene Blue; k for quencher = 1.5 × 10⁹ L/(mol·s); Quencher = Azide ion; used solvent k_d = 5 × 10⁵ s^-1. Use Azide ion as quencher.