The emission kinetics were measured at 400 and 470 nm, where respectively the excited monomer and excimer predominantly emit (Figure ). The kinetics at both wavelengths were fit simultaneously using a global analysis method (Table ). The decays were adequately fit to a sum of three exponentials. The emission kinetics have two lifetime components when a reversible complex is formed between an excited state and a ground state molecule in solution, such as for the formation of excimers and exciplexes. In this case, the two lifetimes correspond to the coupled kinetics for the formation and dissociation of the excimer and the decay of the excited monomer and excimer. For the monomer emission a decay of the emission with two lifetime components is observed, while for the excimer emission a growth followed by a decay is observed. The two shortest lifetimes observed for pyrene in the OTPh/NaDC gel correspond to the monomer-excimer dynamics when two pyrene molecules are in close proximity. The growth kinetics has a negative pre-exponential factor and the lifetime for this component decreased from 38 ns in the absence of iodide anions to 19 ns in the presence of 91 mM iodide anions. The second component for the monomer-excimer dynamics has a lifetime of 70-80 ns. The quantitative analysis of this kinetics is not possible because the local concentration of ground state pyrene is not known. However, the observation of a growth kinetics indicates that the formation of the excimer is a dynamic process, and this process became faster as the iodide anion concentration was raised.