Fluorogenic recognition of Zn2+, Al3+ and F- ions by a new multi-analyte chemosensor based bisphenol A-quinoline

A new available multi-analyte fluorescent sensor based on a bisphenol A-quinoline conjugate (BFQ) was synthesized in two facile steps and was characterized systematically. BFQ exhibited an effectively selective and sensitive recognition toward Zn2+and Al3+ cations in EtOH-H2O (v/v∈=∈9/1) over other cations and F- anion in CH3CN over other anions with remarkably enhanced fluorescent intensities. According to the quantum yield (Φ) measurements, BFQ-Zn2+, BFQ-Al3+ and BFQ-F- complexes showed 16, 22 and 30 times higher Φ values than BFQ, respectively. The complexation properties of BFQ with Zn2+, Al3+ and F- ions were also examined by 1H NMR titration experiments.