Similar kinetic patterns were obtained for FlPAC in acetonitrile (see Figure 5b and Table 2),except that the early fast decay component was decreased from 5.6 ps in toluene to ∼1.8−2.0 ps in acetonitrile; the other two time constants were measured to be ∼34 ps and 4.3 ns, whichare slightly smaller than those of 38 ps and 7.1 ns obtained in toluene.