Often, AIE phenomenon are associated with large Stokes shift and the same has been observed in the present study with a Stokes shift of ~180 nm. It is to be noted that the AIE event of many interesting molecular probes has been efficiently explored for investigating various biological events, particularly for fluorescence imaging of cellular systems with AIE probes. Next, the probe's sensitivity towards NADH was (Fig. ). However, when the probe:NADH ratio was changed to 1:3 from 1:2, the appearance of peak with far-red emission at ~656 nm was observed (Fig. ).