Further addition of water (70% to 99%) enhanced the aggregation of the complexes along with a red shift in the emission maxima to 492 nm and the emergence of an additional emission band at ~575 nm in 1 and 2. The observation of an additional lower energy emission band can be ascribed to the packing of the aggregates observed with the aggregation of the molecules. On comparison, when the water content is increased to 99%, the emission of complex 3 became negligible. Such a drastic decrease in emission most likely originates from enhanced aggregation, strong spin-orbit coupling due to the iodine causing nonradiative decay and along with the presence of low energy states. The lifetimes of the complexes were also affected and changed from 0.32, 0.47 ns to 0.42, 1.32 ns for 1, from 0.38, 0.53 ns to 0.33, 1.42 ns for 2 and 0.36, 0.50 ns to 0.28, 2.16 ns for 3, thus suggesting a stabilization of the excited state of the complexes (Table ). Additionally, comparing the emission intensity of the various aggregates (1-3) in figure highlight that upon increasing the water content from 90 to 99%, the emission intensity of 1 is barely affected, while markedly reduced in the case of 2 and 3. This provides further evidence that additional factors, others than ACQ and heavy element effects, play a role in controlling the excited state dynamics.