Pt(CN)42– excited state quenched by O2

Pt(CN)₄^2– quenched by O₂ at conc. (2.8-14) x 10^–4 mol L^–1
Solvent : H₂O

k_q = 3.0 x 10⁹(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air free = 0.64 micro sec.
Comments: [S] = 0.33 mol/L, as K⁺ salt; forms oligomers