Chromo-luminescent selective detection of fluoride ions by a copper(II) bis(terpyridine) complex solution via a displacement approach

摘要: Herein, for the first time, we have reported a copper(II) bis(terpyridine) complex solution instant ‘naked eye’ chromo-luminescent selective detection of fluoride ions in an acetonitrile medium at micromolar concentration. The copper [Cu(II) (L)2] (NO3)2 [where L = 4′-(4-N,N′-dimethylaminophenyl)-2,2′:6′,2′′-terpyridine] was characterized by mass spectroscopy and terpyridine ligand 1H NMR spectroscopy. selectively discriminates F− from other anions such as AcO−, Br−, Cl−, CN−, H2PO4−, HSO4−, I− media via exceptional optical changes. changes were evaluated UV-visible fluorescence techniques. Studies on binding characteristics with revealed displacement CuF2 resulting significant Furthermore, Cu(II) established means presence 20 equivalents ions. limit (LOD) found to be 5.07 μM which is within permissible range drinking water set World Health Organization (WHO).