Cr(5-Mephen)33+

excited state quenched by O2
Brunschwig, B.; Sutin, N.
J. Am. Chem. Soc. 100: 7568-77 (1978)

Cr(5-Mephen)33+ quenched by O2 at conc. (2.5, 12) x 10–4 mol L–1
Solvent : H2O, 1 mol/L HCl, 25ºC

kq = 6.4 x 107(L mol–1 s–1)

Mechanism: energy transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air free = 310 micro sec. (laser flash, luminescence, multiple shot with signal averaging)

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