'Quenching of Excited States of Metal Complexes

Zn[5-(1-methylpyridinium-4-yl)-10,15,20-tris(4-tolyl)porphyrin]⁺

excited state quenched by MV²⁺

Richoux, M.-C.; Harriman, A.
J. Chem. Soc., Faraday Trans. 1 78: 1873-85 (1982)

Zn[5-(1-methylpyridinium-4-yl)-10,15,20-tris(4-tolyl)porphyrin]⁺ quenched by MV²⁺
Solvent : EtOH

k_q = 2.1 x 10⁷(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: conventional flash, absorption, single shot signal
Lifetime in the absence of quencher, air free = 570 micro sec.
Electron transfer fraction of quenching = 0.11

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Zn[5-(1-methylpyridinium-4-yl)-10,15,20-tris(4-tolyl)porphyrin]+

Zn[5-(1-methylpyridinium-4-yl)-10,15,20-tris(4-tolyl)porphyrin]⁺