'Quenching of Excited States of Metal Complexes

Rh(5,10,15,20-tetraphenylporphyrin)Cl

excited state quenched by MV²⁺

Hoshino, M.; Seki, H.; Yasufuku, K.; Shizuka, H.
J. Phys. Chem. 90: 5149-53 (1986)

Rh(5,10,15,20-tetraphenylporphyrin)Cl quenched by MV²⁺ at conc. <= 3 x 10^–4 mol L^–1
Solvent : EtOH

k_q = 3.0 x 10⁹(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: laser flash, absorption, single shot signal
Lifetime in the absence of quencher, air free = 38 micro sec.
Electron transfer fraction of quenching = 0.2

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