Hollow molecularly imprinted fluorescent sensor using europium complex as functional monomer for the detection of trace 2,4,6-trichlorophenol in real water samples

Hu, Bo; Chen, Li; Yu, Zhixin; Xu, Yeqing; Dai, Jiangdong; Yan, Yongsheng; Ma, Zhijun

doi:10.1016/j.saa.2020.119051

Cited by 11 publications

(3 citation statements)

References 36 publications

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“…Eu(MAA) 3 phen was synthesized by the coprecipitation method according to previous works [51]. Europium chloride solution (0.25 mol/L) was prepared from high-purity Eu 2 O 3 by dissolving in concentrated hydrochloric acid (6 mol/L).…”

Section: Preparation Of Eu(maa) 3 Phenmentioning

confidence: 99%

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

Hu,

Zhao,

Chen

et al. 2024

Molecules

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Paper-based test strips with on-site visual detection have become a hot spot in the field of target detection. Yet, low specific surface area and uneven deposition limit the further application of test strips. Herein, a novel “turn-on” ratio of molecularly imprinted membranes (Eu@CDs-MIMs) was successfully prepared based on a Eu complex-doped polyvinylidene fluoride membrane for the selective, rapid and on-site visual detection of norfloxacin (NOR). The formation of surface-imprinted polymer-containing carbon dots (CDs) improves the roughness and hydrophilicity of Eu@CDs-MIMs. Fluorescence lifetimes and UV absorption spectra verified that the fluorescence enhancement of CDs is based on the synergistic effect of charge transfer and hydrogen bonding between CDs and NOR. The fluorescent test strip showed a linear fluorescent response within the concentration range of 5–50 nM with a limit of detection of 1.35 nM and a short response time of 1 min. In comparison with filter paper-based test strips, Eu@CDs-MIMs exhibit a brighter and more uniform fluorescent color change from red to blue that is visible to the naked eye. Additionally, the applied ratio fluorescent test strip was combined with a smartphone to translate RGB values into concentrations for the visual and quantitative detection of NOR and verified the detection results using high-performance liquid chromatography. The portable fluorescent test strip provides a reliable approach for the rapid, visual, and on-site detection of NOR and quinolones.

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Section: Preparation Of Eu(maa) 3 Phenmentioning

confidence: 99%

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

Hu,

Zhao,

Chen

et al. 2024

Molecules

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“…The trace-level evaluation of organochloride pollutants in complex environments demands the introduction of affordable, sensitive, and rapid detection technologies . However, relying on customary chromatographic and spectrophotometric techniques for this purpose falls short of delivering fast, sensitive, and accurate results . With its simplicity of operation, prompt in situ response, high sensitivity, and selectivity, the onset of electrochemical sensing strategies has brought in an evolutionary upgradation in the detection strategies available for target analytes. ,,− The heart of the electrochemical technique lies in its simple electrode preparation, which accommodates a wide range of catalyst materials. , Electrocatalyst modification offers the authority to dial in materials that accelerate the ion transfer kinetics for targeted analyte detection .…”

Section: Introductionmentioning

confidence: 99%

“… 9 However, relying on customary chromatographic and spectrophotometric techniques for this purpose falls short of delivering fast, sensitive, and accurate results. 10 With its simplicity of operation, prompt in situ response, high sensitivity, and selectivity, the onset of electrochemical sensing strategies has brought in an evolutionary upgradation in the detection strategies available for target analytes. 3 , 8 , 11 − 13 The heart of the electrochemical technique lies in its simple electrode preparation, which accommodates a wide range of catalyst materials.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional CuMn-Layered Double Hydroxides: A Study of Interlayer Anion Variants on the Electrochemical Sensing of Trichlorophenol

Sriram,

Stanley,

Wang

et al. 2024

Inorg. Chem.

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Despite their diverse application profile, aromatic organochlorides such as 2,4,6-trichlorophenol (TP) are widely renowned for creating a negative toll on the balance of the ecosystem. Strict regulatory regimes are required to limit exposure to such organic pollutants. By deployment of a straightforward detection scheme, electrochemical sensing technology offers a competitive edge over the other techniques and practices available for pollutant monitoring.Here, we present a streamlined hydrothermal approach for synthesizing copper−manganese layered double hydroxide (CuMn-LDH) rods to be employed as electrocatalysts for detecting TP in various media. With a focused intention to leverage the full potential of the prepared CuMn-LDHs, the interlamellar region is configured using a series of intercalants. Further, a thorough comparative analysis of their structures, morphologies, and electrochemical performance is accomplished using various analytical techniques. The electrocatalytic oxidation ability of the CuMn-LDH toward TP molecules is markedly altered by incorporating various anions into the gallery region. The dynamic attributes of the developed sensor, such as a wide linear response (0.02−289.2 μM), a low detection limit (0.0026 μM), and good anti-interfering ability, acclaim its superior viability for real-time detection of TP with exceptional tolerance to the presence of foreign moieties. Hence, this work manifests that the nature of intercalants is a vital aspect to consider while designing LDH-based electrochemical probes to detect priority pollutants.

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Simultaneous and rapid detection of polychlorinated phenols in water samples by surface-enhanced Raman spectroscopy combined with principal component analysis

et al. 2022

Anal Bioanal Chem

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Hollow molecularly imprinted fluorescent sensor using europium complex as functional monomer for the detection of trace 2,4,6-trichlorophenol in real water samples

Cited by 11 publications

References 36 publications

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

Enhanced Molecularly Imprinted Fluorescent Test Strip for Rapid and Visual Detection of Norfloxacin via a Smartphone

Two-Dimensional CuMn-Layered Double Hydroxides: A Study of Interlayer Anion Variants on the Electrochemical Sensing of Trichlorophenol

Simultaneous and rapid detection of polychlorinated phenols in water samples by surface-enhanced Raman spectroscopy combined with principal component analysis

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