Pt(CN)42– excited state quenched by MV2+

Pt(CN)₄^2– quenched by MV²⁺ at conc. (5.7-11) x 10^–5 mol L^–1
Solvent : H₂O, 23.5ºC

k_q = 5.6 x 10⁹(L mol^–1 s^–1)

Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 0.54 micro sec. (laser flash, luminescence, single shot signal)
Comments: [S] = 0.099 mol/L, as Ba²⁺ salt; forms oligomers

Pt(CN)₄^2– quenched by MV²⁺ at conc. 0.0036 mol L^–1
Solvent : H₂O, 25ºC

k_q = 1.2 x 10⁹(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