'Quenching of Excited States of Metal Complexes

Mg(phthalocyanine) [triplet]

excited state quenched by MV²⁺

Ohtani, H.; Kobayashi, T.; Ohno, T.; Kato, S.; Tanno, T.; Yamada, A.
J. Phys. Chem. 88: 4431-5 (1984)

Mg(phthalocyanine) [triplet] quenched by MV²⁺
Solvent : DMF/H₂O (9/1)

k_q = 7.6 x 10⁷(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: laser flash, absorption, multiple shot with signal averaging
Lifetime in the absence of quencher, air free = 330 micro sec.
Electron transfer fraction of quenching = 0.71

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