4-Hydroxy-2,2,6,6-tetramethylpiperidine N-oxyl Singlet oxygen

Belford, R.E.; Seely, G.R.; Gust, D.; Moore, T.A.; Moore, A.; Cherepy, N.J.; Ekbundit, S.; Lewis, J.E.; Lin, S.H.
J. Photochem. Photobiol., A 70, 125-133 (1993)

Reaction: 4-Hydroxy-2,2,6,6-tetramethylpiperidine N-oxyl + ¹O₂^* ® products and/or physical quenching
Solvent: CCl₄

k = 9.8 × 10⁴(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 514 nm

Photosensitizer = 5,10,15,20-Tetraphenylporphine.

Belford, R.E.; Seely, G.R.; Gust, D.; Moore, T.A.; Moore, A.; Cherepy, N.J.; Ekbundit, S.; Lewis, J.E.; Lin, S.H.
J. Photochem. Photobiol., A 70, 125-133 (1993)

Reaction: 4-Hydroxy-2,2,6,6-tetramethylpiperidine N-oxyl + ¹O₂^* ® products and/or physical quenching
Solvent: CH₂Cl₂

k = 9.5 × 10⁴(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 514 nm

Photosensitizer = 5,10,15,20-Tetraphenylporphine.

Cen, J.; Hu, X.; Shen, D.; Zhu, L.
Ganguang Kexue Yu Kuang Huaxue, 1-8 (1988)

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

k = 1.2 × 10⁶(L mol^-1 s^-1)

Experimental method: Photolysis
Data type: Derived from steady state measurements using indicator

Photosensitizer = Indicator = Rubrene; used solvent k_d = 1.7 × 10⁴ s^-1; k for indicator = 5.3 × 10⁷ L/(mol·s).

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

Reaction: 4-Hydroxy-2,2,6,6-tetramethylpiperidine N-oxyl + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₅CH₃

Activation energy = 5.4(kJ mol^-1), Log(A) = 6.156, Temperature range 243 to 293 K
k = 1.6 × 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).

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

Reaction: 4-Hydroxy-2,2,6,6-tetramethylpiperidine N-oxyl + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN

k = 1.4 × 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).

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

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

k = 1.1 × 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).

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

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

k = 1.2 × 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).