Pd(2,3,7,8,12,13,17,18-octaethylporphyrin) excited state quenched by trans-alpha-Methylstilbene

Pd(2,3,7,8,12,13,17,18-octaethylporphyrin) quenched by trans-alpha-Methylstilbene
Solvent : Benzene

k_q = 6.8 x 10⁵(L mol^–1 s^–1)

Mechanism: exciplex formation
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 500 micro sec. (conventional flash, luminescence, single shot signal)