title: A robust microporous metal-organic framework as a highly selective and sensitive, instantaneous and colorimetric sensor for Eu³⁺ ions.
abstract: An extremely thermostable magnesium metal-organic framework (Mg-MOF) is reported for use as a highly selective and sensitive, instantaneous and colorimetric sensor for Eu(3+) ions. There has been extensive interest in the recognition and sensing of ions because of their important roles in biological and environmental systems. However, only a few of these systems have been explored for specific rare earth ion detection. A robust microporous Mg-MOF for the recognition and sensing of Eu(3+) ions with high selectivity at low concentrations in aqueous solutions has been synthesized. This stable metal-organic framework (MOF) contains nanoscale holes and non-coordinating nitrogen atoms inside the walls of the holes, which makes it a potential host for foreign metal ions. Based on the energy level matching and efficient energy transfer between the host and the guest, the Mg-MOF sensor is both highly selective and sensitive as well as instantaneous; thus, it is a promising approach for the development of luminescent probing materials with unprecedented applications and its use as an Eu(3+) ion sensor.
authors.affiliation: College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, P. R. China. cezlliu@imu.edu.cn.
authors.forename: Yanfei
authors.initials: Y
authors.lastname: Gao
authors.forename: Xueqiong
authors.initials: X
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Sun
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Liu
mesh_terms: D003124:Colorimetry; D005063:Europium / Q000032:analysis* / Q000737:chemistry; D049449:Luminescence; D008274:Magnesium / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D016062:Porosity
chemical_list: D009942:Organometallic Compounds; D005063:Europium; D008274:Magnesium