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A Multi‐responsive Regenerable Europium–Organic Framework Luminescent Sensor for Fe 3+ , Cr VI Anions, and Picric Acid
Author(s) -
Liu Wei,
Huang Xin,
Xu Cong,
Chen Chunyang,
Yang Lizi,
Dou Wei,
Chen Wanmin,
Yang Huan,
Liu Weisheng
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201603607
Subject(s) - picric acid , luminescence , lanthanide , europium , chemistry , microporous material , quenching (fluorescence) , selectivity , fluorescence , ligand (biochemistry) , metal organic framework , urea , luminescent measurements , inorganic chemistry , photochemistry , materials science , organic chemistry , adsorption , ion , biochemistry , physics , receptor , optoelectronics , quantum mechanics , catalysis
A novel luminescent microporous lanthanide metal–organic framework (Ln‐MOF) based on a urea‐containing ligand has been successfully assembled. Structural analysis revealed that the framework features two types of 1D channels, with urea N−H bonds projecting into the pores. Luminescence studies have revealed that the Ln‐MOF exhibits high sensitivity, good selectivity, and a fast luminescence quenching response towards Fe 3+ , Cr VI anions, and picric acid. In particular, in the detection of Cr 2 O 7 2− and picric acid, the Ln‐MOF can be simply and quickly regenerated, thus exhibiting excellent recyclability. To the best of our knowledge, this is the first example of a multi‐responsive luminescent Ln‐MOF sensor for Fe 3+ , Cr VI anions, and picric acid based on a urea derivative. This Ln‐MOF may potentially be used as a multi‐responsive regenerable luminescent sensor for the quantitative detection of toxic and harmful substances.