title: Excimer-monomer switch: a reaction-based approach for selective detection of fluoride.
abstract: A N-aryl-1,8-naphthalimide based sensor (ES-1) bearing a trimethylsilyl ether has been synthesized by a two-step reaction for quantitative detection of fluoride (F(-)). ES-1 exhibited monomer/excimer emissions at 410 and 524 nm respectively in CH2Cl2. In the presence of F(-), the desilylation of trimethylsilyl ether caused decay of the excimer emission as well as enhancement of the monomer emission to give a ratiometric signal. The fluoride-triggered desilylation showed a high reaction rate and high affinity to F(-) over nine other interfering anions. ES-1 provided a novel fluorescence assay based on excimer-monomer switch of N-aryl-1,8-naphthalimide to quantitatively measure F(-) with a detection limit of 0.133 ppm.
authors.affiliation: University of Nebraska at Kearney, Department of Chemistry, Kearney, Nebraska 68849, USA. caoh1@unk.edu.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Song
authors.forename: Angela
authors.initials: A
authors.lastname: Bamesberger
authors.forename: Lingyun
authors.initials: L
authors.lastname: Yang
authors.forename: Haley
authors.initials: H
authors.lastname: Houtwed
authors.forename: Haishi
authors.initials: H
authors.lastname: Cao
mesh_terms: D005456:Fluorescent Dyes / Q000737:chemistry*; D005459:Fluorides / Q000032:analysis*; D053644:Naphthalimides / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014297:Trimethylsilyl Compounds / Q000737:chemistry
chemical_list: D005456:Fluorescent Dyes; D053644:Naphthalimides; D014297:Trimethylsilyl Compounds; D005459:Fluorides