'Quenching of Excited States of Metal Complexes

Zn(etioporphyrin I) [triplet]

excited state quenched by Azulene

Roy, J.K.; Whitten, D.G.
J. Am. Chem. Soc. 94: 7162-4 (1972)

Zn(etioporphyrin I) [triplet] quenched by Azulene
Solvent : Benzene, 0.01 mol/L 4-nitrotoluene

k_q = 2.6 x 10⁹(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: conventional flash, absorption, single shot signal
Comments: S* is an exciplex with nitrotoluene