title: Four new lanthanide-organic frameworks: selective luminescent sensing and magnetic properties.
abstract: Four new isostructural lanthanide-organic frameworks, [Ln(L)(H2O)2]·H2O·CH3CN (1-Ln) (Ln = Eu, Tb, Dy, and Gd), have been successfully synthesized via solvothermal reactions with a semi-rigid V-shaped multicarboxylate ligand 2-(2',4'-dicarboxylphenoxy) benzoic acid (H3L) and Ln(NO3)3·6H2O. 1-Ln shows 2D layer-by-layer frameworks with interlayer channels decorated by carboxylate groups. 1-Eu exhibits excellent luminescence properties, and therefore, is chosen as a probe for sensing different metal ions and anions. Consequently, 1-Eu displays high selectivity and sensitivity for Fe(3+) and Cr(6+) ions, simultaneously, through the luminescence quenching effect, and thus, should be an excellent candidate for probing these pollutant metal ions. In addition, antiferromagnetic exchange interactions also exist between the Dy(3+) ions in 1-Dy.
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Ning
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn.
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn and State Key Laboratory of Coordination Chemistry, Nanjing University, P.R. China.
authors.forename: Guo-Ping
authors.initials: GP
authors.lastname: Yang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn.
authors.forename: Yunlong
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn.
authors.forename: Nannan
authors.initials: N
authors.lastname: Bai
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn.
authors.forename: Wenyan
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China. ygp@nwu.edu.cn wyaoyu@nwu.edu.cn.
authors.forename: Yao-Yu
authors.initials: YY
authors.lastname: Wang