title: A chiral lanthanide metal-organic framework for selective sensing of Fe(iii) ions.
abstract: A new luminescent lanthanide metal-organic framework was synthesized under hydrothermal conditions by introducing the tetracarboxylic acid ligand (H4bptc) as a chromophore to sensitize the luminescence of the Tb(3+) ion. Interestingly, despite the achiral nature of H4bptc, the resulting framework exhibited rare chiral helical channels. The luminescence studies revealed that this material showed a highly selective fluorescence quenching response to Fe(3+) ions in liquid suspension, which can be conveniently observed by the naked eye under UV light. Thus, this material can be potentially used as a chemosensor for sensing Fe(3+) ions and its selective luminescence quenching response can be explained in terms of the competitive absorption mechanism.
authors.affiliation: School of Materials Science and Engineering, School of Chemistry, TKL of Metal- and Molecule-based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China. jxu@nankai.edu.cn.
authors.forename: Xiao-Lin
authors.initials: XL
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, School of Chemistry, TKL of Metal- and Molecule-based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China. jxu@nankai.edu.cn.
authors.forename: Dan
authors.initials: D
authors.lastname: Tian
authors.affiliation: School of Materials Science and Engineering, School of Chemistry, TKL of Metal- and Molecule-based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China. jxu@nankai.edu.cn.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Gao
authors.affiliation: School of Materials Science and Engineering, School of Chemistry, TKL of Metal- and Molecule-based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China. jxu@nankai.edu.cn.
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Sun
authors.affiliation: School of Materials Science and Engineering, School of Chemistry, TKL of Metal- and Molecule-based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China. jxu@nankai.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.affiliation: School of Materials Science and Engineering, School of Chemistry, TKL of Metal- and Molecule-based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, P. R. China. jxu@nankai.edu.cn.
authors.forename: Xian-He
authors.initials: XH
authors.lastname: Bu