3D Cadmium(II)‐Based Coordination Polymer Constructed from V‐Shaped Semirigid Ligand: Selective Detection of Oxoanion Pollutants CrO42–, Cr2O72–, MnO4– in Water

Zeitschrift fur Anorganische und Allgemeine Chemie - Tập 645 Số 24 - Trang 1358-1364 - 2019
Yan‐Ning Wang1, Shaodan Wang1, Yanmei Gao1, Lulu Yang1, Lan‐Xin Xie1
1College of Chemistry and Chemical Engineering Xinyang Normal University 464000 Xinyang Henan P. R. China

Tóm tắt

A new coordination polymer (CP), namely, [Cd(HL)(4,4′‐bipy)] (1) (H3L = 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 (63)(69·8) topology. Meanwhile, it shows high selectivity and sensitivity for oxoanion pollutants CrO42–, Cr2O72–, and MnO4– 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 CrO42–, Cr2O72–, and MnO4–. The mechanisms of the quenching effect and sensing properties were discussed in detail.

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Zeitschrift fur Anorganische und Allgemeine Chemie

Tập 645 Số 24

1358-1364

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