Eu(1,3-diphenyl-1,3-propanedionato)4– excited state quenched by 1-Aminonaphthalene

Eu(1,3-diphenyl-1,3-propanedionato)₄^– quenched by 1-Aminonaphthalene at conc. <= 0.009 mol L^–1
Solvent : Acetone, 27ºC

k_q = 1.2 x 10⁵(L mol^–1 s^–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 110 micro sec.
Comments: S may be present as tris complex