Zn(2,3,7,8,12,13,17,18-octaethylporphyrin) [singlet] excited state quenched by 9,10-Anthraquinone

Zn(2,3,7,8,12,13,17,18-octaethylporphyrin) [singlet] quenched by 9,10-Anthraquinone
Solvent : Toluene

k_q = 2.0 x 10¹⁰(L mol^–1 s^–1)

Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air saturated = 0.0019 micro sec. (modulated light source, luminescence, phase modulation)