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A New Fluorescent Sensor for Fe 3+ Based on Glycoluril Molecular Clip
Author(s) -
Yan Qiaoli,
Liu Wenjin,
Wen Hongliang,
Zhibin Xu,
Meng Zihui
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904902
Subject(s) - fluorescence , metal ions in aqueous solution , detection limit , metal , ion , proton nmr , chemistry , single crystal , analytical chemistry (journal) , materials science , crystallography , stereochemistry , organic chemistry , chromatography , optics , physics
The application of fluorescent method to metal ions detection features high sensitivity, simple operation and real‐time monitoring. A 2,7‐dihydroxynaphthalene‐functionalized dimethyl glycoluril (called clip 1 ) was synthesized, using a relatively simple method. And it is fully characterized by 1 H NMR, 13 C NMR, HR‐MS and single crystal X‐ray diffraction. The recognition properties of molecular clip 1 were analyzed systematically toward several metal ions using fluorescence spectroscopy, and it was found that molecular clip 1 is selective and sensitive to Fe 3+ . At the same time, the clip 1 shows good anti‐interference ability when other metal ions existed. The limit detection of Fe 3+ is 3×10 −7 M. The fluorescence of clip 1 was quenched apparently by Fe 3+ , which was speculated to be caused by ligand–metal charge transfer mechanism (LMCT). As a new fluorescence probe for Fe 3+ ion, it may expanded the application of glycoluril molecular clips.