title: A highly selective fluorescent chemosensor for Al(III) ion and fluorescent species formed in the solution.
abstract: A chemosensor for the Al(3+) ion, 1-[(3-hydroxypyridin-2-ylamino)methylene]naphthalen-2(1H)-one (H2L), based on inhibited excited-state intramolecular proton transfer was synthesized. The experimental and theoretical calculations at B3LYP+PCM/6-31G(d) revealed that Al(3+) and H2L form a 1:1 complex, [AlL(OH)(H2O)]2, in dimethyl sulfoxide that exhibits two remarkably enhanced fluorescent emissions at 523 and 553 nm. It is confirmed that H2L could be used to detect Al(3+) ions in cells by bioimaging.
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China.
authors.forename: Wei-Hua
authors.initials: WH
authors.lastname: Ding
authors.forename: Wei
authors.initials: W
authors.lastname: Cao
authors.forename: Xiang-Jun
authors.initials: XJ
authors.lastname: Zheng
authors.forename: De-Cai
authors.initials: DC
authors.lastname: Fang
authors.forename: Wing-Tak
authors.initials: WT
authors.lastname: Wong
authors.forename: Lin-Pei
authors.initials: LP
authors.lastname: Jin
mesh_terms: D000535:Aluminum / Q000032:analysis*; D002412:Cations / Q000032:analysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D006367:HeLa Cells; D006801:Humans; D008958:Models, Molecular; D009281:Naphthalenes / Q000737:chemistry; D061848:Optical Imaging; D013050:Spectrometry, Fluorescence
chemical_list: D002412:Cations; D005456:Fluorescent Dyes; D009281:Naphthalenes; D000535:Aluminum