title: A highly selective turn-on fluorescent chemosensor for zinc ion in aqueous media.
abstract: In the paper, a novel rhodamine6G based fluorescent chemosensor bearing 3-carbaldehyde chromone was designed and synthesized. According to the fluorescence behavior toward several metal ions, it showed highly selectivity and sensitivity to Zn(II) over other commonly coexistent metal ions (Cu(II), Cd(II), Hg(II), Mg(II), K(I), Pb(II), Fe(III) and Cr(III)) in aqueous environment (pH = 7.4). Meanwhile the binding constant between Zn(II) and chemosensor achieved 6.21 × 10(11) M(-1) in aqueous media. Moreover, according to the Job plot, 1:1 stoichiometry between Zn(II) and sensor was deduced in aqueous media (pH = 7.4). The good selectivity and sensitivity in aqueous media effectively enhanced the application value of the fluorescent chemosensor for Zn(II).
authors.affiliation: College of Chemistry, Zhoukou Normal University, Zhoukou, 466001, People's Republic of China, liuzch07@lzu.edu.cn.
authors.forename: Zeng-chen
authors.initials: ZC
authors.lastname: Liu
authors.forename: Zheng-yin
authors.initials: ZY
authors.lastname: Yang
authors.forename: Yan-xia
authors.initials: YX
authors.lastname: Li
authors.forename: Bao-dui
authors.initials: BD
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.forename: Tian-rong
authors.initials: TR
authors.lastname: Li
authors.forename: Yong-jie
authors.initials: YJ
authors.lastname: Ding
mesh_terms: D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D007477:Ions / Q000032:analysis; D008958:Models, Molecular; D015394:Molecular Structure; D012235:Rhodamines / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry; D015032:Zinc / Q000032:analysis*
chemical_list: D005456:Fluorescent Dyes; D007477:Ions; D012235:Rhodamines; C026188:rhodamine 6G; D014867:Water; D015032:Zinc