title: A simple levulinate-based ratiometric fluorescent probe for sulfite with a large emission shift.
abstract: A simple 4-hydroxynaphthalimide-derived colorimetric and ratiometric fluorescent probe (1) containing a receptor of levulinate moiety was designed and synthesized to monitor sulfite. Probe 1 could quantificationally detect sulfite by a ratiometric fluorescence spectroscopy method with high selectivity and sensitivity. Specially, probe 1 exhibited a 100 nm red-shifted absorption spectrum along with the color changes from colorless to yellow, and 103 nm red-shifted emission spectra upon the addition of sulfite. Thus, 1 can serve as a "naked-eye" probe for sulfite. Further, the recognition mechanism of probe 1 for sulfite was confirmed using nuclear magnetic resonance and electrospray ionization mass spectrometry. Also, the preliminary practical application demonstrated that our proposed probe provided a promising method for the determination of sulfite.
authors.affiliation: Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology.
authors.forename: Caiyun
authors.initials: C
authors.lastname: Liu
authors.forename: Huifang
authors.initials: H
authors.lastname: Wu
authors.forename: Wen
authors.initials: W
authors.lastname: Yang
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Zhang
mesh_terms: D060766:Drinking Water / Q000737:chemistry; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D005504:Food Analysis / Q000379:methods; D007982:Levulinic Acids / Q000737:chemistry*; D015394:Molecular Structure; D053644:Naphthalimides / Q000138:chemical synthesis / Q000737:chemistry; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013447:Sulfites / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D060766:Drinking Water; D005456:Fluorescent Dyes; D007982:Levulinic Acids; D053644:Naphthalimides; D013447:Sulfites; D014874:Water Pollutants, Chemical