Synthesis, Structure, and Luminescent Properties of Microporous Lanthanide Metal−Organic Frameworks with Inorganic Rod-Shaped Building Units

Citations Over TimeTop 10% of 2006 papers

Abstract

A series of microporous lanthanide metal-organic frameworks, Tb3(BDC)(4.5)(DMF)2(H2O)3.(DMF)(H2O) (1) and Ln3(BDC)(4.5)(DMF)2(H2O)3.(DMF)(C2H5OH)(0.5)(H2O)(0.5) [Ln = Dy (2), Ho (3), Er (4)], have been synthesized by the reaction of the lanthanide metal ion (Ln3+) with 1,4-benzenedicarboxylic acid and triethylenetetramine in a mixed solution of N,N'-dimethylformamide (DMF), water, and C(2)H(5)OH. X-ray diffraction analyses reveal that they are extremely similar in structure and crystallized in triclinic space group P. An edge-sharing metallic dimer and 4 metallic monomers assemble with 18 carboxylate groups to form discrete inorganic rod-shaped building units [Ln6(CO2)18], which link to each other through phenyl groups to lead to three-dimensional open frameworks with approximately 4 x 6 A rhombic channels along the [0,-1,1] direction. A water sorption isotherm proves that guest molecules in the framework of complex 1 can be removed to create permanent microporosity and about four water molecules per formula unit can be adsorbed into the micropores. These complexes exhibit blue fluorescence, and complex 1 shows a Tb3+ characteristic emission in the range of 450-650 nm.

Related Papers

• → Unusual microporous polycatenane-like metal–organic frameworks for the luminescent sensing of Ln3+ cations and rapid adsorption of iodine(2012)98 cited
• → A Dynamic Microporous Metal–Organic Framework with BCT Zeolite Topology: Construction, Structure, and Adsorption Behavior(2007)54 cited
• → Xe adsorption and separation properties of a series of microporous metal–organic frameworks (MOFs) with V-shaped linkers(2017)46 cited
• → Development of MOF-5-like ultra-microporous metal-squarate frameworks for efficient acetylene storage and separation(2023)20 cited
• → Frontispiece: Generation of Hierarchical Porosity in Metal–Organic Frameworks by the Modulation of Cation Valence(2019)