Identification performance of two luminescent lanthanide–organic frameworks. (15th March 2019)

• Record Type: Journal Article
• Authors: Qin, Yin; Feng, Junyang; Yu, Shihang; Zhang, Jian; Li, Zifeng; Li, Gang
• Is Part Of: Polyhedron. Volume 161(2019)
• Page Start: 40
• Page End: 46
• Publication Date: 2019-03-15
• Subjects: Luminescent MOFs -- Crystal structure -- Fluorescence quenching -- Recognition -- Imidazole dicarboxylate; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2018.10.074
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Two imidazole dicarboxylate-based complexes have been hydrothermally synthesized and structurally characterized. Both MOFs have excellent thermal and water stability, and indicate characteristic lanthanide metallic luminescence. Importantly, they can significantly recognize Fe 3+ cation in aqueous solutions. Their sensing mechanisms have been suggested. Abstract: By the reaction of organic ligands, 2-(3, 4-dimethylphenyl)-1 H -imidazole-4, 5-dicarboxylic acid (H3 DMPhIDC) and terephthalic acid (H2 DCB) with Eu 3+ or Tb 3+ ions, respectively, two luminescent metal–organic frameworks (MOFs) [Ln(H2 DMPhIDC)(DCB)] n [Ln = Eu (1 ); Tb (2 )] have been constructed. Both MOFs1 and2 are isostructural and show two-dimensional structures, which were fully characterized by single crystal X-ray diffraction, elemental analysis, and infrared spectroscopy. Both MOFs have excellent thermal and water stability, and indicate characteristic lanthanide metallic luminescence. Importantly, they can significantly recognize Fe 3+ cation in aqueous solutions. Their sensing mechanisms have been suggested according to structural analyses, PXRD data and UV–Vis determinations.