A novel colorimetric and fluorescent probe for detecting fluoride anions: from water and toothpaste samples

摘要

Based on 8-hydroxyquinoline, a 1,8-naphthalimide-derived calorimetric and fluorescent probe was synthesized for naked-eye and fluorescent recognition of F- (from both tetrabutylammonium fluoride and NaF) with high sensitivity and excellent selectivity. The probe can be employed to detect F- quantitatively within certain concentration range, and the detection limit could be as low as 1.8 mu M for tetrabutylammonium fluoride and 9 mu M for NaF. With this probe, the tests for fluorine contents in tap water, water sample from Eyebrow Lake and several brands of toothpastes were successfully performed. (C) 2015 Elsevier Ltd. All rights reserved.