Pd(5,10,15,20-tetraphenylporphyrin) excited state quenched by trans-Stilbene

Pd(5,10,15,20-tetraphenylporphyrin) quenched by trans-Stilbene
Solvent : Benzene

k_q = 1.0 x 10⁵(L mol^–1 s^–1)

Mechanism: exciplex formation
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 358 micro sec. (conventional flash, luminescence, single shot signal)