“…Anbu and coworkers developed a new naphthalimide–phenanthroimidazole fluorescent chemosensor for a turn-ON Cu 2+ detection in living cancer cells, 10 and a naphthalimide-aza 18-crown-6 ether ion-selective chemosensor for UO 2 2+ ion was reported by Tsukahara. 11 A ratiometric 4-amido-1,8-naphthalimide fluorescent sensor based on excimer-monomer emission for determination of pH and water content in organic solvents was reported by Bojinov and coworkers. 12 Zhang and coworkers developed a novel naphthalimide–glutathione chemosensor for fluorescent detection of Fe 3+ and Hg 2+ in aqueous medium 13 and the green synthesis of fluorescent N , O -chelating hydrazone Schiff base for multi-analyte sensing in Cu 2+ , F − and CN − ions was reported by Ervithayasuporn.…”