Chlorophyll a Singlet oxygen

Fiedor, L.; Gorman, A.A.; Hamblett, I.; Rosenbach-Belkin, V.; Salomon, Y.; Scherz, A.; Tregub, I.
Photochem. Photobiol. 58, 506-511 (1993)

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

k = 2.0 × 10⁸(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.

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovskii, A.A.
Doklady Biophys. 310, 6-10 (1990)

Reaction: Chlorophyll a + ¹O₂^* ® products and/or physical quenching
Solvent: Diethyl ether

k = 1 × 10⁸(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 337.1 nm

Self-sensitized.

Egorov, S.Yu.; Krasnovsky, A.A.,Jr.; Vychegzhanina, I.V.; Drozdova, N.N.; Krasnovskii, A.A.
Doklady Biophys. 310, 6-10 (1990)

Reaction: Chlorophyll a + ¹O₂^* ® products and/or physical quenching
Solvent: Pyridine-d₅

k = 9 × 10⁷(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 337.1 nm

Self-sensitized.

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

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

k = 7.3 × 10⁸(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: Chlorophyll a + ¹O₂^* ® products
Solvent: CCl₄

k_react = 2 × 10⁶(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: Chlorophyll a + ¹O₂^* ® products
Solvent: CCl₄

k_react = 4 × 10⁶(L mol^-1 s^-1)

Experimental method: Photolysis
Data type: Derived from steady state measurements

Self-sensitized; Actinometer = Tetracene.

Koka, P.; Song, P.-S.
Photochem. Photobiol. 28, 509-515 (1978)

Reaction: Chlorophyll a + ¹O₂^* ® products and/or physical quenching
Reference Reaction: b-Carotene + ¹O₂^* ®
Solvent: C₆H₆, 67%, EtOH, 33%

k = 1.2 × 10⁷(L mol^-1 s^-1)

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

Photosensitizer = Rose Bengal dianion; used solvent k_d = 1 × 10⁵ s^-1; Indicator = b-Carotene.

Koka, P.; Song, P.-S.
Photochem. Photobiol. 28, 509-515 (1978)

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

k = 2.0 × 10⁷(L mol^-1 s^-1)

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

Photosensitizer = Rose Bengal dianion; used solvent k_d = 1 × 10⁵ s^-1.

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

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

k = 7 × 10⁸(L mol^-1 s^-1)

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

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

Byteva, I.M.; Gurinovich, G.P.; Petsol'd, O.M.
Biophysics (Engl. Transl.) 20, 48-52 (1975)

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

k = 5.0 × 10⁷(L mol^-1 s^-1), T = 293K

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

Self-sensitized; used solvent k_d = 1 × 10⁵ s^-1;