Ommochrome Singlet oxygen

Egorov, S.Yu.; Dontsov, A.E.; Krasnovsky, A.A.; Ostrovskii, M.A.
Biophysics 32, 740-742 (1987)

Reaction: Ommochrome + ¹O₂^* ® products and/or physical quenching
Solvent: D₂O

k = 3(L mol^-1 s^-1), pH = 7.5-8.1

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 337 nm

Photosensitizer = ?; rate is per monomer unit of MW = 600; ommochromes extracted from shrimp eyes contain pigments of the ommin group, e.g. phenothiazine-phenoxazine structures with 3-amino-3-carboxy-1-oxopropyl side chains.