Ru(bpy)32+ excited state quenched by Diphenylamine

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

k_q = 2.5 x 10⁷(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.