Blepharismin Singlet oxygen

Ghetti, F.; Checcucci, G.; Lenci, F.; Heelis, P.F.
J. Photochem. Photobiol., B 13, 315-321 (1992)

Reaction: Blepharismin + ¹O₂^* ® products and/or physical quenching
Solvent: Acetonitrile

k = 2.0 × 10¹⁰(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly

Photosensitizer = Riboflavine tetrabutyrate; Red pigment extracted form Blepharima japonicum; on irradiation red form converts to blue form which reacts with ¹O₂* with k = 4.4 × 10¹⁰ L mol^-1 s^-1; k probably overestimated due to impurities in the crude extracts.