'Quenching of Excited States of Metal Complexes

Pd[5,10,15,20-tetrakis(1-methylpyridinium-4-yl)porphyrin]⁴⁺

excited state quenched by S₂O₈^2–

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

Pd[5,10,15,20-tetrakis(1-methylpyridinium-4-yl)porphyrin]⁴⁺ quenched by S₂O₈^2–
Solvent : H₂O

k_q = 1.9 x 10⁸(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 = 170 micro sec.

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Pd[5,10,15,20-tetrakis(1-methylpyridinium-4-yl)porphyrin]4+

Pd[5,10,15,20-tetrakis(1-methylpyridinium-4-yl)porphyrin]⁴⁺