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3D Cadmium(II)‐Based Coordination Polymer Constructed from V‐Shaped Semirigid Ligand: Selective Detection of Oxoanion Pollutants CrO 4 2– , Cr 2 O 7 2– , MnO 4 – in Water
Author(s) -
Wang YanNing,
Wang ShaoDan,
Gao YanMei,
Yang LuLu,
Xie LanXin
Publication year - 2019
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900157
Subject(s) - phthalic acid , ligand (biochemistry) , chemistry , pyridine , selectivity , detection limit , aqueous solution , crystallography , hydrothermal synthesis , hydrothermal circulation , coordination polymer , isophthalic acid , crystal structure , quenching (fluorescence) , luminescence , inorganic chemistry , materials science , medicinal chemistry , terephthalic acid , fluorescence , organic chemistry , chemical engineering , polyester , receptor , engineering , biochemistry , chromatography , catalysis , quantum mechanics , physics , optoelectronics
A new coordination polymer (CP), namely, [Cd(HL)(4,4′‐bipy)] ( 1 ) (H 3 L = 4‐(5‐carboxy‐pyridine‐3‐yloxy)‐phthalic acid, 4,4′‐bipy = 4,4′‐bipyridine), was synthesized employing a V‐shaped asymmetric tricarboxylic acid ligand under hydrothermal condition. Single‐crystal X‐ray diffraction analysis indicates that compound 1 exhibits a novel three‐dimensional (3D) framework with (3, 5)‐connected (6 3 )(6 9 · 8) topology. Meanwhile, it shows high selectivity and sensitivity for oxoanion pollutants CrO 4 2– , Cr 2 O 7 2– , and MnO 4 – anions in aqueous solutions with detection limits of 4.12 × 10 –6 M, 1.75 × 10 –6 M, and 6.47 × 10 –7 M, respectively. The high selectivity and low detection limit indicate that the compound is promising functional luminescence probe for CrO 4 2– , Cr 2 O 7 2– , and MnO 4 – . The mechanisms of the quenching effect and sensing properties were discussed in detail.