Cholesterol Singlet oxygen

Kruk, I.; Lichszteld, K.; Michalska, T.; Paraskevas, S.M.
Toxicol. Environ. Chem. 35, 167-173 (1992)

Reaction: Cholesterol + ¹O₂^* ® products and/or physical quenching
Solvent: MeOH, 95%, H₂O, 5%

k = 2.5 × 10⁸(L mol^-1 s^-1), T = 310K

Experimental method: Chemical reaction
Analytical method: infrared luminescence
Data type: Derived from steady state measurements

soln. cont. 0.05 mol L^-1 MeONa and 5 × 10^-4 mol L^-1 CoCl₂, used solvent k_d = 1.8 × 10⁵ s^-1; ¹O₂* from autoxidation of oxytetracycline.

Vever-Bizet, C.; Dellinger, M.; Brault, D.; Rougee, M.; Bensasson, R.V.
Photochem. Photobiol. 50, 321-325 (1989)

Reaction: Cholesterol + ¹O₂^* ® products and/or physical quenching
Solvent: C₆D₆

k = 5.7 × 10⁴(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 532 nm

Photosensitizer = 5,10,15,20-Tetraphenylporphine.

Schenck, G.O.; Gollnick, K.; Neumueller, O.A.
Ann. Chem. 603, 46-59 (1957)

Reaction: Cholesterol + ¹O₂^* ® products and/or physical quenching
Solvent: C₅H₅N

b = 8.9 × 10^-1(mol L^-1), T = 293K

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

Photosensitizer = Hematoporphyrin IX; meas. k_d/k = 0.89 mol/L.