'Quenching of Excited States of Metal Complexes

Zn(etioporphyrin I)(pyridine) [triplet]

excited state quenched by cis-4-Nitrostilbene

Lopp, I.G.; Hendren, R.W.; Wildes, P.D.; Whitten, D.G.
J. Am. Chem. Soc. 92: 6440-7 (1970)

Zn(etioporphyrin I)(pyridine) [triplet] quenched by cis-4-Nitrostilbene
Solvent : Benzene, 0.005 mol/L py

k_q = 2.6 x 10⁷(L mol^–1 s^–1)

Mechanism: exciplex formation
Experimental methods: conventional flash, absorption, single shot signal