title: Fluorescent sensors for Ca(2+) and Pb(2+) based on binaphthyl derivatives.
abstract: Two novel binaphthyl compounds have been synthesized for the selective fluorescent recognition of Ca(2+) or Pb(2+). By introducing different terminal groups to the receptor unit, the fluorescence signals of the receptors are significantly changed: 1 is fluorescence enhancement for Ca(2+), 2 is fluorescence quenching for Pb(2+). The binding properties for metal ions were examined by the absorption and fluorescence spectra. The fluorescence intensity enhancement was ascribed to the complex formation between Ca(2+) and 1 which blocked the photo-induced electron transfer process.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China. ywwang@lzu.edu.cn
authors.forename: Ya-Wen
authors.initials: YW
authors.lastname: Wang
authors.forename: Yong-Tao
authors.initials: YT
authors.lastname: Shi
authors.forename: Yu
authors.initials: Y
authors.lastname: Peng
authors.forename: Ai-Jiang
authors.initials: AJ
authors.lastname: Zhang
authors.forename: Tian-Hua
authors.initials: TH
authors.lastname: Ma
authors.forename: Wei
authors.initials: W
authors.lastname: Dou
authors.forename: Jiang-Rong
authors.initials: JR
authors.lastname: Zheng
mesh_terms: D002118:Calcium / Q000032:analysis*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D007854:Lead / Q000032:analysis*; D009281:Naphthalenes / Q000138:chemical synthesis / Q000737:chemistry*; D055095:Optics and Photonics; D010777:Photochemistry
chemical_list: D005456:Fluorescent Dyes; D009281:Naphthalenes; D007854:Lead; D002118:Calcium