Phenyl-N-tert-butylnitrone Singlet oxygen

Moger, G.; Darmanyan, A.P.
Magy. Kem. Foly. 94, 282-284 (1988)

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

Activation energy = 4 × 10^-1(kJ mol^-1), Log(A) = 7.026, Temperature range 223 to 293 K
k = 9.0 × 10⁶(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX; Indicator = 1,3-Diphenylisobenzofuran.

Moger, G.; Darmanyan, A.P.
Magy. Kem. Foly. 94, 282-284 (1988)

Reaction: PBN + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN

k = 1.8 × 10⁷(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX; Indicator = 1,3-Diphenylisobenzofuran.

Moger, G.; Darmanyan, A.P.
Magy. Kem. Foly. 94, 282-284 (1988)

Reaction: PBN + ¹O₂^* ® products and/or physical quenching
Solvent: CHCl₃

k = 4.4 × 10⁶(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX; Indicator = 1,3-Diphenylisobenzofuran.

Darmanyan, A.P.; Moger, G.
J. Radioanal. Nucl. Chem. 105, 303-308 (1986)

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

Activation energy = 4 × 10^-1(kJ mol^-1), Log(A) = 7.026, Temperature range 223 to 293 K
k = 9.0 × 10⁶(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX. [Sensitizer] = 5.0 × 10^-6 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Radioanal. Nucl. Chem. 105, 303-308 (1986)

Reaction: PBN + ¹O₂^* ® products
Reference Reaction: Tetracene + ¹O₂^* ®
Solvent: C₆H₅CH₃

k_react £1.0 × 10⁵(L mol^-1 s^-1), k_reference = 1.2 × 10⁷(L mol^-1 s^-1), T = 293K

Experimental method: Photolysis
Analytical method: vis-UV absorption
Data type: Relative value measured by steady state method
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX; see also [88MOG/DAR]. [Sensitizer] = 3.0 × 10^-5 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Radioanal. Nucl. Chem. 105, 303-308 (1986)

Reaction: PBN + ¹O₂^* ® products and/or physical quenching
Solvent: CH₃CN

k = 1.8 × 10⁷(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX. [Sensitizer] = 5.0 × 10^-6 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Radioanal. Nucl. Chem. 105, 303-308 (1986)

Reaction: PBN + ¹O₂^* ® products
Reference Reaction: Tetracene + ¹O₂^* ®
Solvent: CH₃CN

k_react £1.0 × 10⁵(L mol^-1 s^-1), k_reference = 1.2 × 10⁷(L mol^-1 s^-1), T = 293K

Experimental method: Photolysis
Analytical method: vis-UV absorption
Data type: Relative value measured by steady state method
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX. [Sensitizer] = 5.0 × 10^-6 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Radioanal. Nucl. Chem. 105, 303-308 (1986)

Reaction: PBN + ¹O₂^* ® products and/or physical quenching
Solvent: CHCl₃

k = 4.4 × 10⁶(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX. [Sensitizer] = 5.0 × 10^-6 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Radioanal. Nucl. Chem. 105, 303-308 (1986)

Reaction: PBN + ¹O₂^* ® products
Reference Reaction: Tetracene + ¹O₂^* ®
Solvent: CHCl₃

k_react £1.0 × 10⁵(L mol^-1 s^-1), k_reference = 1.2 × 10⁷(L mol^-1 s^-1), T = 293K

Experimental method: Photolysis
Analytical method: vis-UV absorption
Data type: Relative value measured by steady state method
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX. [Sensitizer] = 3.0 × 10^-5 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Photochem. 26, 269-274 (1984)

Reaction: PBN + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₆

k = 8.3 × 10⁶(L mol^-1 s^-1), T = 293K

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator
Excitation wavelength: 530 nm

Photosensitizer = Protoporphyrin IX; Indicator = 1,3-Diphenylisobenzofuran; see also [85DAR/MOG]. [Sensitizer] = 5 × 10^-6 (mol L^-1). [Indicator] = 2.5 × 10^-5 (mol L^-1).

Darmanyan, A.P.; Moger, G.
J. Photochem. 26, 269-274 (1984)

Reaction: PBN + ¹O₂^* ® products
Reference Reaction: Tetracene + ¹O₂^* ®
Solvent: C₆H₆

k_react = 1.4 × 10⁵(L mol^-1 s^-1), k_reference = 1.2 × 10⁷(L mol^-1 s^-1), T = 293K

Experimental method: Photolysis
Analytical method: vis-UV absorption
Data type: Relative value measured by steady state method

Photosensitizer = Protoporphyrin IX. see also [85DAR/MOG]. [Sensitizer] = 3 × 10^-5 (mol L^-1).

Harbour, J.R.; Issler, S.L.; Hair, M.L.
J. Am. Chem. Soc. 102, 7778-7779 (1980)

Reaction: PBN + ¹O₂^* ® products and/or physical quenching
Solvent: H₂O

k = 1.4 × 10⁸(L mol^-1 s^-1), k_ind = 1.5 × 10⁹(L mol^-1 s^-1)

Experimental method: Photolysis
Analytical method: oxygen consumption
Data type: Derived from steady state measurements

Photosensitizer = Methylene Blue; k for quencher = 1.5 × 10⁹ L/(mol·s); Quencher = Azide ion; used solvent k_d = 5 × 10⁵ s^-1. Use Azide ion as quencher.