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: TMPN + ¹O₂^* ® products and/or physical quenching
Solvent: CCl₄

k = 1.4 × 10⁵(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: TMPN + ¹O₂^* ® products and/or physical quenching
Solvent: CH₂Cl₂

k = 1.6 × 10⁵(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.

Yang, X.-Z.; Chen, Y.; Dickinson, L.C.; Chien, J.C.W.
Polym. Degrad. Stab. 20, 1-35 (1988)

Reaction: TMPN + ¹O₂^* ® products and/or physical quenching
Reference Reaction: Rub + ¹O₂^* ®
Solvent: Methylene chloride

k = 2.8 × 10⁶(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: vis-UV emission
Data type: Derived from steady state measurements using indicator
Excitation wavelength: 520 nm

Photosensitizer = Indicator = Rubrene; used solvent k_d = 7.3 × 10³ s^-1; k for indicator = 7 × 10⁷ L/(mol·s). [Sensitizer] = 1.6 × 10^-6 (mol L^-1). [O₂] = air.

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

Reaction: TMPN + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₅CH₃

Activation energy = 8.4(kJ mol^-1), Log(A) = 7.238, Temperature range 243 to 293 K
k = 5.5 × 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: TMPN + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN

k = 4.3 × 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: TMPN + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CH₂OH

k = 2.5 × 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).

Ballardini, R.; Beggiato, G.; Bortolus, P.; Faucitano, A.; Buttafava, A.; Gratani, F.
Polym. Degrad. Stab. 7, 41-53 (1984)

Reaction: TMPN + ¹O₂^* ® products and/or physical quenching
Solvent: Benzene, 80%, Methanol, 20%

k = <1.0 × 10⁵(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator
Excitation wavelength: 694 nm

Photosensitizer = Methylene Blue; Indicator = 1,3-Diphenylisobenzofuran.