Cu(etioporphyrin I) excited state quenched by Perylene

Cu(etioporphyrin I) quenched by Perylene at conc. (5-40) x 10^–4 mol L^–1
Solvent : Toluene

k_q = 5.5 x 10⁹(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: emission quenching (method not specified)
Lifetime in the absence of quencher, air free = 0.15 micro sec. (72E321)