Mg(phthalocyanine) [singlet] excited state quenched by 1,4-Benzoquinone

Mg(phthalocyanine) [singlet] quenched by 1,4-Benzoquinone at conc. <= 0.1 mol L^–1
Solvent : Dioxane

k_q = 2.7 x 10¹⁰(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.0065 micro sec. (573002)
This value also reported in 67A003