Cr(bpy)33+

excited state quenched by Co(NH3)63+
Gandolfi, M.T.; Maestri, M.; Sandrini, D.; Balzani, V.
Inorg. Chem. 22: 3435-9 (1983)

Cr(bpy)33+ quenched by Co(NH3)63+
Solvent : H2O, 0.1 mol/L H2SO4, 22ºC

kq = 2 x 106(L mol–1 s–1)

Mechanism: energy transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air saturated = 38 micro sec. (laser flash, luminescence, multiple shot with signal averaging)

Endicott, J.F.; Ramasami, T.; Gaswick, D.C.; Tamilarasan, R.; Heeg, M.J.; Brubaker, G.R.; Pyke, S.C.
J. Am. Chem. Soc. 105: 5301-10 (1983)

Cr(bpy)33+ quenched by Co(NH3)63+
Solvent : H2O, 1 mol/L HCl, 25ºC

kq = 4.3 x 106(L mol–1 s–1)

Mechanism: energy transfer; reductive electron transfer
Experimental methods: conventional flash, absorption, single shot signal

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