Tetraphenylfuran Singlet oxygen

Shereshovets, V.V.; Kabalnova, N.N.; Komissarov, V.D.; Mavrodiev, V.K.; Lerman, B.M.; Belogaeva, T.A.; Tolstikov, G.A.
React. Kinet. Catal. Lett. 41, 251-256 (1990)

Reaction: Tetraphenylfuran + ¹O₂^* ® products and/or physical quenching
Solvent: C₆H₅Cl, 90%, 2-PrOH, 10%

k = 3.6 × 10⁸(L mol^-1 s^-1), T = 273K

Experimental method: Chemical reaction
Analytical method: infrared luminescence
Data type: Derived from steady state measurements

used solvent k_d = 4.1 × 10⁴ s^-1; ¹O₂* from hydrotrioxide, e.g. (CH₃)₂C(OH)OOOH.

Gorman, A.A.; Lovering, G.; Rodgers, M.A.J.
J. Am. Chem. Soc. 101, 3050-3055 (1979)

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

Enthalpy of activation = 0(kJ mol^-1), Entropy of activation = 0.0(J K^-1 mol^-1), Temperature range 223 to 353 K
k = 2.8 × 10⁸(L mol^-1 s^-1)

Experimental method: Pulse radiolysis
Analytical method: vis-UV absorption
Data type: Absolute value measured directly using indicator

Photosensitizer = Naphthalene; Indicator = 1,3-Diphenylisobenzofuran. [Sensitizer] = 10^-2 (mol L^-1).

Koch, E.
Tetrahedron 24, 6295-6318 (1968)

Reaction: Tetraphenylfuran + ¹O₂^* ® products and/or physical quenching
Solvent: MeOH

Activation energy = 4.2(kJ mol^-1)
b ~3.0 × 10^-2(mol L^-1), T = 293K

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

Photosensitizer = Rose Bengal dianion. meas. k_d/k = ~0.030 mol/L.