N-Acetyltryptophan methyl ester Singlet oxygen

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

Reaction: N-Acetyltryptophan methyl ester + ¹O₂^* ® products and/or physical quenching
Solvent: D₂O, 75%, EtOH, 25%

k = 3.2 × 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.

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

Reaction: N-Acetyltryptophan methyl ester + ¹O₂^* ® products
Reference Reaction: DPBF + ¹O₂^* ®
Solvent: MeOH, 50%, H₂O, 50%

k_react = 6 × 10⁶(L mol^-1 s^-1), k_reference = 8 × 10⁸(L mol^-1 s^-1), T = 308K

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

¹O₂* from MNPO₂. Added solute (0.3-3) × 10^-4.

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

Reaction: N-Acetyltryptophan methyl ester + ¹O₂^* ® products
Reference Reaction: DPBF + ¹O₂^* ®
Solvent: MeOH, 50%, H₂O, 50%

k_react = 4 × 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: N-Acetyltryptophan methyl ester + ¹O₂^* ® products and/or physical quenching
Solvent: MeOH, 50%, H₂O, 50%

k = 2.4 × 10⁷(L mol^-1 s^-1), T = 308K

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

used solvent k_d = 2.8 × 10⁵ s^-1; ¹O₂* from MNPO₂. Added solute (0.3-3) × 10^-4.

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

Reaction: N-Acetyltryptophan methyl ester + ¹O₂^* ® products and/or physical quenching
Solvent: MeOH, 50%, H₂O, 50%

k = 6.3 × 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).