Synthesis and structure of an aqueous stable Cu(II)-based coordination polymer with multifunctional fluorescence sensing property

被引:0
|
作者
Wang, Shao-Dan [1 ]
Chang, Xue-Ping [2 ]
Wang, Yan-Ning [2 ]
Xu, Hao [2 ]
Jia, Zhe-Yu [2 ]
Guo, Zheng-Ye [2 ]
机构
[1] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China
[2] Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Henan, Peoples R China
关键词
Coordination polymer; Fluorescence detection; Cr(VI) / Mn(VII); Nitrofuran antibiotics; Acetylacetone; METAL-ORGANIC FRAMEWORKS; SENSITIVE DETECTION; SELECTIVE DETECTION; CRYSTAL-STRUCTURE; AROMATIC-AMINES; LUMINESCENT; CHROMATOGRAPHY; ACETYLACETONE; ANTIBIOTICS; WATER;
D O I
10.1016/j.molstruc.2024.140539
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Advanced methods for both biological and environmental hazardous pollutants are of sustained interest. Herein, a new coordination polymer, namely, [Cu2(OH)(1,2,4-bca)(bmoe)]& sdot;H2O ( Cu-CP ) has been hydrothermally constructed with a mix-ligand strategy, employing 1,2,4-benzenetricarboxylic acid (1,2,4-bca) and 1,1 '-bis(1H- benzimidazolyl) oxydiethane (bmoe) as organic ligands. The intrinsic strong blue-light emission and the great stability in water solutions with the broad range of pH values (pH = 4- 12) of Cu-CP provide a platform for practical fluorescence sensing application in water samples. Fluorescence measurements reveal that Cu-CP displays interesting multi-responsive dection activities toward toxic heavy-metal ions Cr 2 O 7 2- / CrO4 2- / MnO4-, nitrofuran antibiotics nitrofurantoin (NFT) / nitrofurazone (NFZ) and acetylacetone (ACAC) in aqueous solutions achieving both high sensitivity and low detection limits (micromolar for Cr(VI) / Mn(VII) / ACAC and nanomolar for NFT / NFZ). Furthermore, the interference experiments have verified its excellent selectivity. A synergetic contribution of internal filtration effect (IFE) and Fo<spacing diaeresis>rster resonance energy transfer (FRET) between Cr 2 O 7 2- / CrO42- / MnO4-and the framework of Cu-CP realize the fluorescence quenching behavior for Cr(VI) / Mn(VII) detection, while FRET, IFE and photoinduced electron transfer (PET) mechanisms are synergistically responsible in the case of NFT / NFZ, ACAC sensing supported by the molecular simulations and UV-vis spectral overlap experiments. This present work affords precious guidance for the effective and facile design and preparation of multifunctional luminescent coordination polymers with promising performance.
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页数:11
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