Ru(bpy)32+ excited state quenched by trans-1,2-Bis(4-pyridyl)ethene

Ru(bpy)₃²⁺ quenched by trans-1,2-Bis(4-pyridyl)ethene at conc. 0.0013-0.0049 mol L^–1
Solvent : H₂O, 0.01 mol/L Pbuf, 25ºC, pH 5.6, ionic strength 0.1 (LiClO₄)

k_q = 9.2 x 10⁷ (calc)(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.6 micro sec. (766404)
Comments: Q partially protonated