Ru(bpy)32+ excited state quenched by CoIII(phen)2(mu-O2,NH2)CoIII(phen)24+

Ru(bpy)₃²⁺ quenched by Co^III(phen)₂(mu-O₂,NH₂)Co^III(phen)₂⁴⁺ at conc. <= 9 x 10^–4 mol L^–1
Solvent : H₂O, 1 mol/L HCl, 25ºC, ionic strength 1.0

k_q = 8.1 x 10⁹(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.5 micro sec.