A stable Eu (III) coordination polymer for sensitive and selective sensing of Fe3+/Cr2O72- ions in aqueous medium

被引：3
|
作者：
Guo, Ruihong [1 ]
Gao, Lingling [2 ]
Zhou, Wendi [1 ]
Zhang, Yujuan [1 ]
Hu, Tuoping [1 ]
机构：
[1] North Univ China, Coll Sci, Dept Chem, Taiyuan 030051, Peoples R China
[2] Jinzhong Univ, Coll Chem & Chem Engn, Jinzhong 030619, Shanxi, Peoples R China
来源：
POLYHEDRON | 2021年 / 193卷 / 193期
关键词：
Semirigid polycarboxylic acid ligand; Lanthanide coordination polymer; Fe3+ cation; Cr2O72-; anion; Sensing; METAL-ORGANIC FRAMEWORKS; MAGNETIC-PROPERTIES; FLUORESCENT-PROBE; GAS-ADSORPTION; LUMINESCENCE; FE3+; WATER; LIGAND; STABILITY; ANIONS;
D O I：
10.1016/j.poly.2020.114846
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A lanthanide coordination polymer [Eu(BCPB)(H2O)(2)](n) (1) was synthesized based on a semirigid tripodal polycarboxylic acid ligand (H3BCPB = 3,5-bis(2-carboxy-phenoxy)-benzoic acid). Single crystal X-ray diffraction analyses showed that compound 1 exhibits 2D layer structures with [Eu-6(COO)(22)(H2O)(12)] SBU. Furthermore, fluorescence tests demonstrated that 1 has highly sensitive detection for Fe3+/Cr2O72- ions in aqueous solution by a fluorescence quenching effect. Meanwhile, the quenching mechanisms of 1 for Fe3+ and Cr2O72- were also investigated in detail. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：9
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