IR 144 Singlet oxygen

Lougnot, D.J.; Lepaja, S.; Fouassier, J.P.
J. Chim. Phys. Phys.-Chim. Biol. 79, 617-628 (1982)

Reaction: 2-[2-[3-[[1,3-dihydro-1,1-dimethyl-3-(3-sulfopropyl)benz[e]indol-2-ylidene]ethylidene]-2-[4-(ethoxycarbonyl)-1-piperidinyl]-1-cyclopenten-1-yl]ethenyl[-1,1-dimethy3-(3-sulfopropyl)benz[e]indolium, hydroxide, inner salt, compound with triethylamine + ¹O₂^* ® products
Solvent: DMSO

k_react = 1.7 × 10⁶(L mol^-1 s^-1), T = 295K

Experimental method: Photolysis
Analytical method: colorimetry
Data type: Derived from steady state measurements
Excitation wavelength: 514 nm

Photosensitizer = Thionine; used solvent k_d = 1.3 × 10⁴ s^-1; used singlet oxygen quantum yield for sensitizer = 0.87.

Lougnot, D.J.; Lepaja, S.; Fouassier, J.P.
J. Chim. Phys. Phys.-Chim. Biol. 79, 617-628 (1982)

Reaction: 2-[2-[3-[[1,3-dihydro-1,1-dimethyl-3-(3-sulfopropyl)benz[e]indol-2-ylidene]ethylidene]-2-[4-(ethoxycarbonyl)-1-piperidinyl]-1-cyclopenten-1-yl]ethenyl[-1,1-dimethy3-(3-sulfopropyl)benz[e]indolium, hydroxide, inner salt, compound with triethylamine + ¹O₂^* ® products
Solvent: CH₃OH

k_react = 1.0 × 10⁷(L mol^-1 s^-1), T = 295K

Experimental method: Photolysis
Analytical method: colorimetry
Data type: Derived from steady state measurements
Excitation wavelength: 514 nm

Photosensitizer = Thionine; used solvent k_d = 1.4 × 10⁵ s^-1; used singlet oxygen quantum yield for sensitizer = 0.87.