Detection of trace tetracycline in fish via synchronous fluorescence quenching with carbon quantum dots coated with molecularly imprinted silica

Yang, Ji Hyun; Lin, Zhengzhong; Nur, A-Zha; Lü, Yan; Wu, Minghui; Zeng, Jun; Chen, Xiaomei; Huang, Zhiyong

doi:10.1016/j.saa.2017.09.066

Cited by 79 publications

(16 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After extracting the NA, the silica particles have shown to be able to bind selectively the NA which can be detected by the quenching of fluorescence. A similar method has been used to prepare a fluorescent sensor of nifepidine, dopamine and tetracycline …”

Section: Molecular Imprinted Sol‐gel Materials With C‐dotsmentioning

confidence: 99%

Sol‐Gel Chemistry for Carbon Dots

Malfatti

Innocenzi

2018

The Chemical Record

View full text Add to dashboard Cite

Carbon dots are an emerging class of carbon-based nanostructures produced by low-cost raw materials which exhibit a widely-tunable photoluminescence and a high quantum yield. The potential of these nanomaterials as a substitute of semiconductor quantum dots in optoelectronics and biomedicine is very high, however they need a customized chemistry to be integrated in host-guest systems or functionalized in core-shell structures. This review is focused on recent advances of the sol-gel chemistry applied to the C-dots technology. The surface modification, the fine tailoring of the chemical composition and the embedding into a complex nanostructured material are the main targets of combining sol-gel processing with C-dots chemistry. In addition, the synergistic effect of the sol-gel precursor combined with the C-dots contribute to modify the intrinsic chemo-physical properties of the dots, empowering the emission efficiency or enabling the tuning of the photoluminescence over a wide range of the visible spectrum.

show abstract

Section: Molecular Imprinted Sol‐gel Materials With C‐dotsmentioning

confidence: 99%

Sol‐Gel Chemistry for Carbon Dots

Malfatti

Innocenzi

2018

The Chemical Record

View full text Add to dashboard Cite

show abstract

“…However, TCs residues in foods of animal origin can cause gastrointestinal disturbances and allergic reactions to the consumers [2]. Therefore, it is urgent to develop a facile, rapid, and reliable method for the monitoring of trace TCs residues in food products [3].…”

Section: Introductionmentioning

confidence: 99%

Preparation of hydrophilic molecularly imprinted solid‐phase microextraction fiber for the selective removal and extraction of trace tetracyclines residues in animal derived foods

Lü

et al. 2020

J of Separation Science

View full text Add to dashboard Cite

The present work reported a novel hydrophilic and selective solid-phase microextraction fiber by improved multiple co-polymerization method immobilization of tetracycline molecularly imprinted polymer on a stainless steel wire and directly coupled with high-performance liquid chromatography for sensitive determination of trace tetracyclines residues in animal derived foods. The developed molecularly imprinted polymer coated solid-phase microextraction fibers were characterized through scanning electron microscopy, Fourier transfer infrared spectroscopy, thermogravimetric analysis, and adsorption experiments, the fiber with cross-linked and porous structure was observed and high thermal and chemical stability. The maximum adsorption capacity of this fiber with good selectivity reached 2.35 µg/mg in aqueous matrices, and showed good repeatability (relative standard deviation ≤ 6.6%, n = 5) and satisfying reproducibility between fiber to fiber (relative standard deviation ≤ 7.8%, n = 5). Under the optimized solid-phase microextraction conditions, satisfactory linearity (5-1000 µg/L) and detection limits (0.38-0.72 µg/kg, S/N = 3) for all the tetracyclines were obtained. The practicality of this method was proved by adding tetracycline, oxytetracycline at three levels to milk, chicken, and fish samples with good recoveries of 77.3-104.4%. K E Y W O R D Shigh-performance liquid chromatography, hydrophilic molecularly imprinted polymers, solid-phase microextraction, tetracyclines 2172

show abstract

“…Molecularly imprinted polymers (MIPs) contained recognition sites with memory function of shape, size, and functional groups to template for high selectivity, which have attracted excellent attention in solid-phase extraction [13–16]. When MIPs were coated on QDs (QDs@MIPs), a promising sensor is provided with high selectivity and sensitivity and facile operation [17–19]. Among different polymerization methods for MIPs [20–22], sol-gel polymerization, using 3-(aminopropyl) triethoxysilane (APTES) as the functional monomer and tetraethyl orthosilicate (TEOS) as the crosslinker, is the widely selected strategy because of the simple synthesis process and water-compatible capability [22].…”

Section: Introductionmentioning

confidence: 99%

“…Among different polymerization methods for MIPs [20–22], sol-gel polymerization, using 3-(aminopropyl) triethoxysilane (APTES) as the functional monomer and tetraethyl orthosilicate (TEOS) as the crosslinker, is the widely selected strategy because of the simple synthesis process and water-compatible capability [22]. The Stöber method and reverse microemulsion method were the two main methods for sol-gel polymerization, and the reverse microemulsion method could control the thickness of MIPs layer better for accessible recognition sites [18, 19, 23]. Up to date, some excellent reports about QDs@MIPs by the reverse microemulsion method have been fabricated.…”

Section: Introductionmentioning

confidence: 99%

“…Ensafi et al prepared QDs@MIPs with average diameter at approximate 40 nm, which were then utilized to sensitively detect thioridazine hydrochloride in plasma within 2 min [18]. Yang et al fabricated QDs@MIPs with a diameter at about 75 nm and then used them for sensitive and selective determination of tetracycline in fish within 5 min [19]. Wu et al grafted MIPs onto QDs, and the resultant QDs@MIPs with diameter at about 49 nm could successfully determine malachite green in fish samples within 5 min [23].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Molecularly Imprinted Polymers-Coated CdTe Quantum Dots for Highly Sensitive and Selective Fluorescent Determination of Ferulic Acid

Wang

Long

Peng

et al. 2019

Journal of Analytical Methods in Chemistry

View full text Add to dashboard Cite

Ferulic acid (FA), an important phenolic acid, is widely distributed in higher plants and presents many pharmacological effects. Therefore, sensitive determination of FA in complex matrix is necessary. Molecularly imprinted polymers-coated CdTe quantum dots (CdTe-QDs@MIPs) exhibited incomparable advantages because of their combination of excellent selectivity of MIPs and high sensitivity of QDs. Here, a fluorescent probe based on CdTe-QDs@MIPs was successfully fabricated for selective and sensitive determination of FA. MIPs shell was obtained by the reverse microemulsion method using FA, 3-(aminopropyl) triethoxysilane (APTES), and tetraethyl orthosilicate (TEOS), as template, functional monomer, and crosslinker. In optimal conditions, the fluorescence CdTe-QDs@MIPs sensor exhibited fast response (within only 3 min), high sensitivity (limit of detection, LOD at 0.85 μg/l), excellent linear ranges (2–100 μg/l) with a correlation coefficient of 0.9996, and distinguished selectivity for FA. Satisfactory recoveries from 91.8% to 110.3% were achieved with precisions below 6.6% for FA analysis in real pineapple juice and apple juice by developed CdTe-QDs@MIPs. The fluorescence results coincided well with those obtained by high-performance liquid chromatography (HPLC). It could be concluded that the resultant CdTe-QDs@MIPs offered a new way for rapid and sensitive analysis of FA in the complex matrix.

show abstract

Detection of trace tetracycline in fish via synchronous fluorescence quenching with carbon quantum dots coated with molecularly imprinted silica

Cited by 79 publications

References 40 publications

Sol‐Gel Chemistry for Carbon Dots

Sol‐Gel Chemistry for Carbon Dots

Preparation of hydrophilic molecularly imprinted solid‐phase microextraction fiber for the selective removal and extraction of trace tetracyclines residues in animal derived foods

Molecularly Imprinted Polymers-Coated CdTe Quantum Dots for Highly Sensitive and Selective Fluorescent Determination of Ferulic Acid

Contact Info

Product

Resources

About