b,b-Carotene-4,4'-diol, all-E- Singlet oxygen

Lee, S.-H.; Min, D.B.
J. Agric. Food Chem. 38, 1630-1634 (1990)

Reaction: b,b-Carotene-4,4'-diol, all-E- + ¹O₂^* ® products and/or physical quenching
Solvent: CH₂Cl₂

k = 7.4 × 10⁹(L mol^-1 s^-1), T = 293K

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

Photosensitizer = Chlorophyll a; used solvent k_d = 1.0 × 10⁴ s^-1; Indicator = Soybean oil. [Sensitizer] = 4.4 × 10^-9 (mol L^-1).

Mathews-Roth, M.M.; Wilson, T.; Fujimori, E.; Krinsky, N.I.
Photochem. Photobiol. 19, 217-222 (1974)

Reaction: b,b-Carotene-4,4'-diol, all-E- + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₆, 60%, MeOH, 40%

k = 2.9 × 10¹⁰(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: vis-UV absorption
Data type: Derived from steady state measurements using indicator

Photosensitizer = Methylene Blue; Indicator = Rubrene. used solvent k_d = 1.0 × 10⁵ s^-1.