A water-stable zwitterionic Zn(II) coordination polymer as a luminescent sensor for the nitrofurazone antibiotic in milk. (1st November 2022)

• Record Type: Journal Article
• Authors: Wang, Kaimin; Li, Lifeng; Yang, Liangzhu; Guo, Jinrong; Wang, Zhengliang; Tang, Huaijun; Ma, Yulu
• Is Part Of: Polyhedron. Volume 226(2022)
• Publication Date: 2022-11-01
• Subjects: Coordination polymer -- Zwitterionic ligand -- Nitrofurazone in milk -- Fluorescence sensor -- Mechanism; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2022.116092
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: A novel coordination polymer, {[ZnL1.5 (H2 O)]·(ClO4 )2 ·3H2 O} (CP 1 ), was constructed under hydrothermal conditions from a zwitterionic organic ligand, which was fully characterized. Among different classes of antibiotics, CP 1 can selectively and efficiently recognize the nitrofurazone (NZF) antibiotic with a low limit of detection (0.012 μM). As a sensitive sensor, CP 1 can detect NZF in milk, and a perfect recovery (97.40% − 103.05%) was obtained. Abstract: The abuse of antibiotics has become a global problem because it has caused many serious environmental problems and threatened human health. Therefore, the selective and sensitive detection of antibiotic residues is important. In this work, a novel coordination polymer, {[ZnL1.5 (H2 O)]·(ClO4 )2 ·3H2 O} (CP 1 ), was constructed under hydrothermal conditions using a zwitterionic organic ligand (1, 1′(2, 3, 5, 6-tetramethyl-1, 4-phenylene)bis(methylene)bis(4- carboxypyridin-1-ium)chloride (H2 LCl2 )). CP 1 was characterized by single-crystal X-ray diffraction, powder X-ray diffraction, FT-IR spectroscopy, elemental analysis and thermal gravimetric analysis. Among the different classes of antibiotics, CP 1 can selectively and efficiently recognize the nitrofurazone (NZF) antibiotic with low limit of detection (0.012 μM). CP 1 showed good selectively, strong anti-interference and powerful recyclability in the detection of the NZF antibiotic. As a sensitive sensor, CP 1 can detect NZF in milk, and a perfect recovery (97.40 %–103.05 %) was acquired. Additionally, the fluorescence quenching mechanism was attributed to fluorescence resonance energy transfer and photoinduced electron transfer.