'Quenching of Excited States of Metal Complexes

Mg(etioporphyrin I) [triplet]

excited state quenched by 1-Methoxy-4-nitrobenzene

Roy, J.K.; Carroll, F.A.; Whitten, D.G.
J. Am. Chem. Soc. 96: 6349-55 (1974)

Mg(etioporphyrin I) [triplet] quenched by 1-Methoxy-4-nitrobenzene at conc. (1-50) x 10^–5 mol L^–1
Solvent : Benzene, 25ºC

k_q = 7 x 10⁸(L mol^–1 s^–1)

Mechanism: exciplex formation
Experimental methods: conventional flash, absorption, single shot signal
Comments: nonlinear Stern-Volmer plot at higher [Q]'s

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