Eu(crypt)3+

excited state quenched by Os(CN)64–
Sabbatini, N.; Bonazzi, A.; Ciano, M.; Balzani, V.
J. Am. Chem. Soc. 106: 4055-6 (1984)

Eu(crypt)3+ quenched by Os(CN)64–
Solvent : H2O, 1 mol/L KCl, 22ºC

kq = 7.8 x 108(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: steady state irradiation, luminescence
Lifetime in the absence of quencher, air saturated = 215 micro sec. (laser flash, luminescence, multiple shot with signal averaging)
Comments: ion-pairing at high [S] and [Q]

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