Ru(bpy)32+

excited state quenched by Co2+
Ziessel, R.; Hawecker, J.; Lehn, J.-M.
Helv. Chim. Acta 69: 1065-84 (1986)

Ru(bpy)32+ quenched by Co2+
Solvent : Acetonitrile/2-PrOH/H2O (3/1/1), CO2 satd

kq = 5 x 106(L mol–1 s–1)

Mechanism: oxidative electron transfer?
Experimental methods: steady state irradiation, luminescence

Ziessel, R.; Hawecker, J.; Lehn, J.-M.
Helv. Chim. Acta 69: 1065-84 (1986)

Ru(bpy)32+ quenched by Co2+
Solvent : Acetonitrile/TEOA/H2O (3/1/1)

kq = 7.1 x 107(L mol–1 s–1)

Mechanism: oxidative electron transfer?
Experimental methods: steady state irradiation, luminescence

Demas, J.N.; Addington, J.W.
J. Am. Chem. Soc. 98: 5800-6 (1976)

Ru(bpy)32+ quenched by Co2+ at conc. 0.05-0.07 mol L–1
Solvent : H2O, ~21ºC, ionic strength 0 (calc'd)

kq < 5 x 105(L mol–1 s–1)


Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.60 micro sec. (laser flash, luminescence, multiple shot with signal averaging)

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