'Quenching of Excited States of Metal Complexes

Sn[5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin]Cl₂^4–

excited state quenched by S₂O₈^2–

Harriman, A.; Porter, G.; Walters, P.
J. Chem. Soc., Faraday Trans. 1 79: 1335-50 (1983)

Sn[5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin]Cl₂^4– quenched by S₂O₈^2–
Solvent : H₂O

k_q = ~1 x 10⁵(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 = 1000 micro sec.

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Sn[5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin]Cl24–

Sn[5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin]Cl₂^4–