Tryptamine Singlet oxygen

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

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

k_react = 2.7 × 10⁷(L mol^-1 s^-1), T = 295K

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

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

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

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

k = 5.2 × 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.

Martinez, G.; Zimerman, O.E.; Garcia, N.A.
Collect. Czech. Chem. Commun. 58, 1299-1308 (1993)

Reaction: Tryptamine + ¹O₂^* ® products
Reference Reaction: Furfuryl alcohol + ¹O₂^* ®
Solvent: H₂O

k_react = 7.8 × 10⁹(L mol^-1 s^-1), k_reference = 1.2 × 10⁸(L mol^-1 s^-1), pH = 7

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

Photosensitizer = Rose Bengal dianion.

Inoue, K.; Matsuura, T.; Saito, I.
Bull. Chem. Soc. Jpn. 55, 2959-2964 (1982)

Reaction: Tryptamine + ¹O₂^* ® products
Reference Reaction: DPBF + ¹O₂^* ®
Solvent: MeOH, 50%, H₂O, 50%

k_react = 9 × 10⁶(L mol^-1 s^-1), k_reference = 8 × 10⁸(L mol^-1 s^-1)

Experimental method: Modulated photolysis
Analytical method: vis-UV absorption
Data type: Relative value measured by steady state method

Photosensitizer = Rose Bengal dianion. Added solute (0.3-3) × 10^-4. [Sensitizer] = 4 × 10^-6 (mol L^-1).

Inoue, K.; Matsuura, T.; Saito, I.
Bull. Chem. Soc. Jpn. 55, 2959-2964 (1982)

Reaction: Tryptamine + ¹O₂^* ® products and/or physical quenching
Solvent: MeOH, 50%, H₂O, 50%

k = 5.5 × 10⁷(L mol^-1 s^-1)

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

Photosensitizer = Rose Bengal dianion. used solvent k_d = 2.8 × 10⁵ s^-1. Added solute (0.3-3) × 10^-4. [Sensitizer] = 4 × 10^-6 (mol L^-1).