A Multifunctional Fluorescent Probe Based on 1,8-Naphthalimide for the Detection of Co2+, F−, and CN−

Cations and anions are indispensable resources for the development of nature modern industry agriculture, exploring more efficient technology to monitor them is urgently needed. A multifunctional fluorescent probe based on 1,8-naphthalimide, N-(2-thiophenhydrazide)acetyl-4-morpholine-1,8-naphthalimide (TMN), was successfully designed synthesized detection Co2+, F−, CN−, with N-carboxymethyl-4-morpholine-1,8-naphthalimide thiophene-2-carbohydrazide as starting materials. TMN displayed superior stability in MeCN an “on–off” mode towards CN− by naked eye. The linear response ranges were 0–3 4–19 μM a limit 0.21 detecting 0–5 5–22 0.36 0–10 10–25 0.49 CN−. could also recognize real samples. Finally, possible sensing mechanisms deeply investigated. These results implied that be potential chemosensor monitoring metal cations sensitively selectively used sample detection.