Rose Bengal dianion Singlet oxygen

Martinez, G.; Bertolotti, S.G.; Zimerman, O.E.; Martire, D.O.; Braslavsky, S.E.; Garcia, N.A.
J. Photochem. Photobiol., B 17, 247-255 (1993)

Reaction: Rose Bengal dianion + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN, 50%, H₂O, 50%

k = 1.5 × 10⁷(L mol^-1 s^-1)

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

Self-sensitized.

Clennan, E.L.; Noe, L.J.; Wen, T.; Szneler, E.
J. Org. Chem. 54, 3581-3584 (1989)

Reaction: Rose Bengal dianion + ¹O₂^* ® products and/or physical quenching
Solvent: (CD₃)₂CO

k = 9.9 × 10⁶(L mol^-1 s^-1)

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

Self-sensitized. [Sensitizer] = 9-10 × 10^-5 (mol L^-1).

Tanielian, C.; Golder, L.; Wolff, C.
J. Photochem. 25, 117-125 (1984)

Reaction: Rose Bengal dianion + ¹O₂^* ® products and/or physical quenching
Reference Reaction: 2-Methyl-2-pentene + ¹O₂^* ®
Solvent: CH₃CN

k = 5.0 × 10⁷(L mol^-1 s^-1)

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

Self-sensitized; used solvent k_d = 1.7 × 10⁴ s^-1.

Tanielian, C.; Golder, L.; Wolff, C.
J. Photochem. 25, 117-125 (1984)

Reaction: Rose Bengal dianion + ¹O₂^* ® products and/or physical quenching
Reference Reaction: 2-Methyl-2-pentene + ¹O₂^* ®
Solvent: CH₃OH

k = 2.0 × 10⁷(L mol^-1 s^-1)

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

Photosensitizer = Rose Bengal dianion. used solvent k_d = 1.1 × 10⁵ s^-1.