Two Highly Water-Stable Imidazole-Based Ln-MOFs for Sensing Fe3+,Cr2O72–/CrO42– in a Water Environment

Yu, Haihuan; Fan, Mingyue; Li, Qun; Su, Zhong‐Min; Li, Xiao; Pan, Qing-Qing; Hu, Xiaoli

doi:10.1021/acs.inorgchem.9b03364

Cited by 172 publications

(71 citation statements)

References 43 publications

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“…Either too few or excessive intake of Fe 3+ could result in different kinds of disorders as well as severe diseases like Parkinson's disease and inflammation [106]. Yu et al [107] constructed stable MOFs-based sensors (Eu-MOF and Tb-MOF) for Fe 3+ by selecting rigid organic ligands of MOFs. Eu-MOF and Tb-MOF displayed strong water stability, heat resistance and luminescence stability at a wide PH range.…”

Section: Cationsmentioning

confidence: 99%

Nanoscale Metal-Organic Frameworks as Fluorescence Sensors for Food Safety

et al. 2021

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Food safety has attracted attention worldwide, and how to detect various kinds of hazardous substances in an efficient way has always been a focus. Metal-Organic Frameworks (MOFs) are a class of hybrid porous materials formed by organic ligand and metal ions. Nanoscale MOFs (NMOFs) exhibit great potential in serving as fluorescence sensors for food safety due to their superior properties including high accuracy, great stability, fast response, etc. In this review, we focus on the recent development of NMOFs sensing for food safety. Several typical methods of NMOFs synthesis are presented. NMOFs-based fluorescence sensors for contaminants and adulterants, such as antibiotics, food additives, ions and mycotoxin etc. are summarized, and the sensing mechanisms are also presented. We explore these challenges in detail and provide suggestions about how they may be surmounted. This review could help the exploration of NMOFs sensors in food related work.

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Section: Cationsmentioning

confidence: 99%

Nanoscale Metal-Organic Frameworks as Fluorescence Sensors for Food Safety

et al. 2021

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“…These channels of MOFs were filled with cations and exhibited selective adsorption and recyclable detection of Cr 3+ in aqueous solutions; it all boiled down to the structure and chemical bond of the fluorescent MOFs [136]. Yu et al [137] reported two imidazole-based Ln-MOFs for Cr 2 O 7 2or CrO 4 2detection in water, these MOFs had high fluorescence stability in water more than 30 days.…”

Section: Heavy Metal Detectionmentioning

confidence: 99%

Recent Progress on Luminescent Metal-Organic Framework-Involved Hybrid Materials for Rapid Determination of Contaminants in Environment and Food

et al. 2020

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The high speed of contaminants growth needs the burgeoning of new analytical techniques to keep up with the continuous demand for monitoring and legislation on food safety and environmental pollution control. Metal-organic frameworks (MOFs) are a kind of advanced crystal porous materials with controllable apertures, which are self-assembled by organic ligands and inorganic metal nodes. They have the merits of large specific surface areas, high porosity and the diversity of structures and functions. Latterly, the utilization of metal-organic frameworks has attracted much attention in environmental protection and the food industry. MOFs have exhibited great value as sensing materials for many targets. Among many sensing methods, fluorometric sensing is one of the widely studied methods in the detection of harmful substances in food and environmental samples. Fluorometric detection based on MOFs and its functional materials is currently one of the most key research subjects in the food and environmental fields. It has gradually become a hot research direction to construct the highly sensitive rapid sensors to detect harmful substances in the food matrix based on metal-organic frameworks. In this paper, we introduced the synthesis and detection application characteristics (absorption, fluorescence, etc.) of metal-organic frameworks. We summarized their applications in the MOFs-based fluorometric detection of harmful substances in food and water over the past few years. The harmful substances mainly include heavy metals, organic pollutants and other small molecules, etc. On this basis, the future development and possible application of the MOFs have prospected in this review paper.

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“…Rare earth ion complexes are widely used as the probe molecules because of the good fluorescent properties. [3,4] The luminescence of rare earth metals are mainly ascribed to the f-f transition within 4 f electron orbits, whereas the electric-dipole f-f transition of rare earth ion is inherent forbidden. Even though some magnetic-dipole f-f transition of rare earth metal ions are allowed, their intensity is too poor to carry out in actual applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Fluorescence of La³⁺, Gd³⁺ doped EuW₁₀ for Temperature sensing performance

Yin

Guo

et al. 2021

Zeitschrift anorg allge chemie

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Using the luminescent properties of temperature-sensitive paints (TSPs) to monitor temperature is a new type of temperature measurement technology. Herein, Na 9 [EuW 10 O 36 ](EuW 10 ) molecules were doped with non-fluorescent rare earth metal ions (La 3 + and Gd 3 + ) to prepare Na 9 [Eu x La 1-x W 10 O 36 ](Eu x La 1-x W 10 ) and Na 9 [Eu x Gd 1-x W 10 O 36 ](Eu x Gd 1-x W 10 ) probe molecules. The doping of non-fluorescent rare earth metal ions (La 3 + and Gd 3 + ) will not change the structure of the parent EuW 10 . As the relative content of La 3 + ions increasing, the luminescent intensity of the Eu x La 1-x W 10 series decreases non-monotonically; as the relative content of Gd 3 + ions increasing, the luminescent intensity of Eu x Gd 1-x W 10 series decreases monotonically. Sub-sequently, Eu x La 1-x W 10 and Eu x Gd 1-x W 10 as probe molecules were added into methyl methacrylate (MMA) to obtain temperature-sensitive paints via polymerization process. In the range of 50°C to 100°C, the maximum relative sensitivity of temperature-sensitive paints EuW 10 /PMMA, Eu 0.9 La 0.1 W 10 /PMMA and Eu 0.7 Gd 0.3 W 10 /PMMA can reach 1.27 %°C À 1 , 1.43 %°C À 1 , 1.42 %°C À 1 , respectively. This study indicates that the temperature sensing characteristics can be enhanced by doping EuW 10 with non-fluorescent rare earth ions (La 3 + , Gd 3 + ), which can be promising materials used in more areas with high-precision temperature measurements.

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Two Highly Water-Stable Imidazole-Based Ln-MOFs for Sensing Fe³⁺,Cr₂O₇^2–/CrO₄^2– in a Water Environment

Cited by 172 publications

References 43 publications

Nanoscale Metal-Organic Frameworks as Fluorescence Sensors for Food Safety

Nanoscale Metal-Organic Frameworks as Fluorescence Sensors for Food Safety

Recent Progress on Luminescent Metal-Organic Framework-Involved Hybrid Materials for Rapid Determination of Contaminants in Environment and Food

Enhanced Fluorescence of La³⁺, Gd³⁺ doped EuW₁₀ for Temperature sensing performance

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Two Highly Water-Stable Imidazole-Based Ln-MOFs for Sensing Fe3+,Cr2O72–/CrO42– in a Water Environment

Cited by 172 publications

References 43 publications

Nanoscale Metal-Organic Frameworks as Fluorescence Sensors for Food Safety

Nanoscale Metal-Organic Frameworks as Fluorescence Sensors for Food Safety

Recent Progress on Luminescent Metal-Organic Framework-Involved Hybrid Materials for Rapid Determination of Contaminants in Environment and Food

Enhanced Fluorescence of La3+, Gd3+ doped EuW10 for Temperature sensing performance

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Two Highly Water-Stable Imidazole-Based Ln-MOFs for Sensing Fe³⁺,Cr₂O₇^2–/CrO₄^2– in a Water Environment

Enhanced Fluorescence of La³⁺, Gd³⁺ doped EuW₁₀ for Temperature sensing performance