Pt(CN)42– excited state quenched by CuII-EDTA

Pt(CN)₄^2– quenched by Cu^II-EDTA at conc. 0.018 mol L^–1
Solvent : H₂O, 24.5ºC, [Cu]/[L] = 1

k_q = 3.3 x 10⁸(L mol^–1 s^–1)

Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.64 micro sec. (laser flash, luminescence, single shot signal)
Comments: [S] = 0.40 mol/L, as K⁺ salt; forms oligomers