1,4-Naphthoquinone N-methyl-N-phenylhydrazone Singlet oxygen

Bortolus, P.; Monti, S.; Albini, A.; Fasani, E.; Pietra, S.
J. Org. Chem. 54, 534-540 (1989)

Reaction: 1,4-Naphthoquinone N-methyl-N-phenylhydrazone + ¹O₂^* ® products and/or physical quenching
Solvent: CH₂Cl₂

k = 8.9 × 10⁷(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 694 nm

Photosensitizer = Methylene Blue.

Bortolus, P.; Monti, S.; Albini, A.; Fasani, E.; Pietra, S.
J. Org. Chem. 54, 534-540 (1989)

Reaction: 1,4-Naphthoquinone N-methyl-N-phenylhydrazone + ¹O₂^* ® products
Reference Reaction: 9,10-Dimethylanthracene + ¹O₂^* ®
Solvent: CH₂Cl₂

k_react = 2 × 10³(L mol^-1 s^-1), k_reference = 2.1 × 10⁷(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: gas chromatography
Data type: Relative value measured by steady state method
Excitation wavelength: 589 nm

Photosensitizer = Methylene Blue; used ref. k in benzene [74STE/PER2]. [Sensitizer] = 3.8 × 10^-4 (mol L^-1).