N,N,N',N'-Tetramethyl-p-phenylenediamine Singlet oxygen

Saito, I.; Matsuura, T.; Inoue, K.
J. Am. Chem. Soc. 105, 3200-3206 (1983)

Reaction: TMPD + ¹O₂^* ® products and/or physical quenching
Solvent: Methanol, 50%, Water, 50%

k = 1.8 × 10⁹(L mol^-1 s^-1), T = 308K

Experimental method: Chemical reaction
Analytical method: vis-UV absorption
Data type: Derived from steady state measurements using indicator

Indicator = 1,3-Diphenylisobenzofuran; used solvent k_d = 2.8 × 10⁵ s^-1; ¹O₂* from MNPO₂.

Manring, L.E.; Foote, C.S.
J. Phys. Chem. 86, 1257-1259 (1982)

Reaction: TMPD + ¹O₂^* ® TMPD·⁺ + O₂·^-
Solvent: H₂O

k_react ~ 3 × 10⁹(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly

Photosensitizer = Erythrosin dianion; used solvent k_d = 3.3 × 10⁵ s^-1; used singlet oxygen quantum yield for erythrosin = 0.68.

Young, R.H.; Brewer, D.; Kayser, R.; Martin, R.; Feriozi, D.; Keller, R.A.
Can. J. Chem. 52, 2889-2893 (1974)

Reaction: TMPD + ¹O₂^* ® TMPD·⁺ + O₂·^-
Solvent: MeOH

k = 1.0 × 10⁹(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator
Excitation wavelength: 610 nm

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

Young, R.H.; Martin, R.L.; Feriozi, D.; Brewer, D.; Kayser, R.
Photochem. Photobiol. 17, 233-244 (1973)

Reaction: TMPD + ¹O₂^* ® TMPD·⁺ + O₂·^-
Solvent: MeOH

b = 1.5 × 10^-4(mol L^-1)

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

Photosensitizer = Rose Bengal dianion; Indicator = 1,3-Diphenylisobenzofuran; meas. k_d/k = 0.00015 mol/L.