Pheophytin a Singlet oxygen

Tanielian, C.; Wolff, C.
Photochem. Photobiol. 48, 277-280 (1988)

Reaction: Pheophytin a + ¹O₂^* ® products and/or physical quenching
Reference Reaction: 2-Methyl-2-pentene + ¹O₂^* ®
Solvent: C₆H₆

k = 7.4 × 10⁷(L mol^-1 s^-1), k_reference = 8 × 10⁵(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: oxygen consumption
Data type: Relative value measured by steady state method

Self-sensitized.

Krasnovsky, A.A.,Jr.; Venediktov, E.A.; Cherenko, O.M.
Biophysics (Engl. Transl.) 27, 1009-1016 (1982)

Reaction: Pheophytin a + ¹O₂^* ® products
Solvent: CCl₄

k_react = 1.4 × 10⁴(L mol^-1 s^-1)

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

Photosensitizer = TPP, TPBC or MP; Actinometer = Tetracene.

Krasnovsky, A.A.,Jr.
Photochem. Photobiol. 29, 29-36 (1979)

Reaction: Pheophytin a + ¹O₂^* ® products
Solvent: CCl₄

k_react = 1 × 10⁴(L mol^-1 s^-1)

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

Self-sensitized; Actinometer = Tetracene.

Krasnovsky, A.A.,Jr.
Biophysics (Engl. Transl.) 22, 960-962 (1977)

Reaction: Pheophytin a + ¹O₂^* ® products and/or physical quenching
Solvent: CCl₄

k = 2 × 10⁷(L mol^-1 s^-1)

Experimental method: Modulated photolysis
Analytical method: infrared luminescence
Data type: Derived from steady state measurements

Photosensitizer = PP or BChl a; used solvent k_d = 36 s^-1; also see [78KRA], [79KRA].