5-Methoxy-4-[2-(methylsulfonyl)-4-nitrophenyl]azo-1-naphthoxide ion Singlet oxygen

Merkel, P.B.; Smith, W.F.,Jr.
J. Phys. Chem. 83, 2834-2840 (1979)

Reaction: 5-Methoxy-4-[2-(methylsulfonyl)-4-nitrophenyl]azo-1-naphthoxide ion + ¹O₂^* ® products
Solvent: DMF

k_react = 4.3 × 10⁷(L mol^-1 s^-1)

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

Photosensitizer = Rose Bengal dianion; used solvent k_d = 1 × 10⁵ s^-1; used singlet oxygen quantum yield of sensitizer = 0.4; soln. contains NH₄OH.

Merkel, P.B.; Smith, W.F.,Jr.
J. Phys. Chem. 83, 2834-2840 (1979)

Reaction: 5-Methoxy-4-[2-(methylsulfonyl)-4-nitrophenyl]azo-1-naphthoxide ion + ¹O₂^* ® physical quenching
Solvent: DMF

k_quen = 2.6 × 10⁸(mol L^-1)

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

Self-sensitized; used solvent k_d = 1 × 10⁵ s^-1; includes possible back energy transfer; k_prod. = 4.6 × 10⁷ L/(mol·s) derived using singlet oxygen quantum yield = 2.7 × 10^-4; soln. contains NH₄OH.