Indole Singlet oxygen

Michaeli, A.; Feitelson, J.
Photochem. Photobiol. 59, 284-289 (1994)

Reaction: Indole + ¹O₂^* ® products and/or physical quenching
Solvent: D₂O, 75%, EtOH, 25%

k = 1.9 × 10⁷(L mol^-1 s^-1), T = 295K

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 532 nm

Photosensitizer = Rose Bengal dianion.

Michaeli, A.; Feitelson, J.
Photochem. Photobiol. 59, 284-289 (1994)

Reaction: Indole + ¹O₂^* ® products
Solvent: D₂O, 75%, EtOH, 25%

k_react = 9 × 10⁶(L mol^-1 s^-1), T = 295K

Experimental method: Photolysis
Analytical method: vis-UV emission
Data type: Absolute value measured directly

Photosensitizer = Rose Bengal dianion; used solvent k_d = 4.8 × 10⁴ s^-1; Actinometer = 9,10-Dimethylanthracene.

Palumbo, M.C.; Garcia, N.A.; Arguello, G.A.
J. Photochem. Photobiol., B 7, 33-42 (1990)

Reaction: Indole + ¹O₂^* ® products
Reference Reaction: Anthracene + ¹O₂^* ®
Solvent: CH₃CN

k_react = <10⁴(L mol^-1 s^-1), k_reference = 1.2 × 10⁶(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: vis-UV emission
Data type: Relative value measured by steady state method

Photosensitizer = 5,10,15,20-Tetraphenylporphinatozinc(II).

Palumbo, M.C.; Garcia, N.A.; Arguello, G.A.
J. Photochem. Photobiol., B 7, 33-42 (1990)

Reaction: Indole + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN

k = 2.5 × 10⁶(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 598 nm

Photosensitizer = 5,10,15,20-Tetraphenylporphinatozinc(II).

Yoshimura, A.; Ohno, T.
Photochem. Photobiol. 48, 561-565 (1988)

Reaction: Indole + ¹O₂^* ® products and/or physical quenching
Solvent: H₂O

k = 7 × 10⁷(L mol^-1 s^-1), pH = 7.2

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

Photosensitizer = Rose Bengal dianion; used solvent k_d = 2.5 × 10⁵ s^-1. [Sensitizer] = 5 × 10^-5 (mol L^-1).

Gorman, A.A.; Lovering, G.; Rodgers, M.A.J.
J. Am. Chem. Soc. 101, 3050-3055 (1979)

Reaction: Indole + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₅CH₃

Enthalpy of activation = 0(kJ mol^-1), Entropy of activation = -141(J K^-1 mol^-1), Temperature range 223 to 353 K
k = 7.7 × 10⁵(L mol^-1 s^-1)

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator

Photosensitizer = Naphthalene; Indicator = 1,3-Diphenylisobenzofuran. [Sensitizer] = 10^-2 (mol L^-1).