title: A retrievable and highly selective fluorescent probe for monitoring dihydrogen phosphate ions based on a naphthalimide framework.
abstract: A novel selective fluorescent chemosensor based on naphthalimide derivatives (AN-SB) was synthesized and characterized. Once combined with Cu(2+), compound AN-SB could give rise to a visible yellow to orange color change and fluorescence quenching, while other metal ions showed subtle disturbance. The complex (AN-SB-Cu(2+)) formed by Cu(2+) and AN-SB displayed high specificity for H2PO4(-). Among the various anions, only H2PO4(-) induced the revival of color and fluorescence of AN-SB, resulting in "off-on" type sensing of H2PO4(-) anion. The signal transduction occured via reversible formation-separation of complex AN-SB-Cu(2+), however, slight changes were observed in the presence of other anions.
authors.affiliation: Shanghai Key Laboratory of Functional Materials Chemistry and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Chen
authors.forename: Limin
authors.initials: L
authors.lastname: Wang
authors.forename: Gang
authors.initials: G
authors.lastname: Zou
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Cao
authors.forename: Yue
authors.initials: Y
authors.lastname: Wu
authors.forename: Peijun
authors.initials: P
authors.lastname: Hu
mesh_terms: D000838:Anions / Q000032:analysis*; D056831:Coordination Complexes / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D008958:Models, Molecular; D053644:Naphthalimides / Q000737:chemistry*; D010710:Phosphates / Q000032:analysis*; D013050:Spectrometry, Fluorescence / Q000379:methods
chemical_list: D000838:Anions; D056831:Coordination Complexes; D005456:Fluorescent Dyes; D053644:Naphthalimides; D010710:Phosphates; D003300:Copper
keywords: Dihydrogen phosphate anions; Fluorescence revival; Fluorescent probe; High selectivity; Naphthalimide derivatives