Ru(bpy)32+

excited state quenched by Phenothiazine
Ballardini, R.; Varani, G.; Indelli, M.T.; Scandola, F.; Balzani, V.
J. Am. Chem. Soc. 100: 7219-23 (1978)

Ru(bpy)32+ quenched by Phenothiazine
Solvent : Acetonitrile, 0.1 mol/L TEAP, ~22ºC

kq = 4.1 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air saturated = 0.15 micro sec. (spark lamp, luminescence, single photon counting)

Sandrini, D.; Maestri, M.; Belser, P.; von Zelewsky, A.; Balzani, V.
J. Phys. Chem. 89: 3675-9 (1985)

Ru(bpy)32+ quenched by Phenothiazine
Solvent : Acetonitrile, ionic strength 2 x 10–4

kq = 5.5 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, , luminescence
Lifetime in the absence of quencher, air saturated = 0.160 micro sec.

Maestri, M.; Graetzel, M.
Ber. Bunsenges. Phys. Chem. 81: 504-7 (1977)

Ru(bpy)32+ quenched by Phenothiazine
Solvent : MeOH

kq = 5.6 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air free = 0.75 micro sec.

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