4-Hydroxy-4-(2-phenylethynyl)-2,2,6,6-tetramethylpiperidine N-oxyl Singlet oxygen

Darmanyan, A.P.; Tatikolov, A.S.
J. Photochem. 32, 157-163 (1986)

Reaction: 4-Hydroxy-4-(2-phenylethynyl)-2,2,6,6-tetramethylpiperidine N-oxyl + ¹O₂^* ® products and/or physical quenching
Solvent: CHCl₃

Activation energy = 1.3(kJ mol^-1), Log(A) = 5.107, Temperature range 243 to 293 K
k = 7.5 × 10⁴(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 347 nm

Photosensitizer = An and PP. [Sensitizer] = 1.0 × 10^-4 (mol L^-1).

Darmanyan, A.P.; Tatikolov, A.S.
J. Photochem. 32, 157-163 (1986)

Reaction: 4-Hydroxy-4-(2-phenylethynyl)-2,2,6,6-tetramethylpiperidine N-oxyl + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CH₂OH

k = 1.7 × 10⁵(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 347 nm

Photosensitizer = An and PP. [Sensitizer] = 1.0 × 10^-4 (mol L^-1).