'Quenching of Excited States of Metal Complexes

Cr(bpy)₃³⁺

excited state quenched by H₂O

Jamieson, M.A.; Langford, C.H.; Serpone, N.; Hersey, M.W.
J. Phys. Chem. 87: 1004-8 (1983)

Cr(bpy)₃³⁺ quenched by H₂O
Solvent : Acetonitrile, 22ºC

k_q = 1.3 x 10³(L mol^–1 s^–1)

Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air free = 43 micro sec.