'Quenching of Excited States of Metal Complexes

Al(5,10,15,20-tetraphenylporphyrin)(OH)

excited state quenched by 1,4-Benzoquinone

Kapinus, E.I.; Staryi, V.P.; Dilung, I.I.
Theor. Exp. Chem. 18: 402-9 (1982)

Al(5,10,15,20-tetraphenylporphyrin)(OH) quenched by 1,4-Benzoquinone
Solvent : Toluene

k_q = 7 x 10⁷ (calc)(L mol^–1 s^–1)

Mechanism: exciplex formation
Experimental methods: conventional flash, absorption, single shot signal
Lifetime in the absence of quencher, air free = 910 micro sec.
Comments: biexponential decay, see Mech. [2]; same data in 81E718

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