“…Moreover, the luminous low molecular-mass organic gelators (LMOGs) are a fascinating family of substances that have gained attention in recent years due to their self-assembled structure and its specific response to external stimuli. [45][46][47][48] The hydrazine fluorescent sensors reported so far are able to detect it in solid, solution, or gel phase separately or simply in one of these two phases [49][50][51][52] and, to the best of our knowledge, no such fluorescent sensor is reported having the potential to recognize N 2 H 4 simultaneously in solid, gel, solution and polymer film, all four different phases including its bioimaging applications. With these targets, the current research effort is trying to develop unique, more affordable, and portable techniques to achieve the sensitive and fast on-site detection of N 2 H 4 .…”