On-off-on fluorescent nanosensing: Materials, detection strategies and recent food applications

He, Haoyang; Sun, Da‐Wen; Wu, Zheng; Pu, Hongbin; Wei, Qingyi

doi:10.1016/j.tifs.2021.11.029

Cited by 123 publications

(25 citation statements)

References 118 publications

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“…Fluorescence detection technology combined with nanomaterials has inimitable advantages such as an ultralow detection limit, real-time rapid assaying, a larger detection range, and low cost, − which has been widely applied into determination of antibiotics. For example, Yang et al developed a nontoxic fluorescent Cs 2 ZnCl 4 perovskite nanocrystal probe for sensitive norfloxacin (NOR) sensing.…”

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confidence: 99%

Laser-Printed Paper-Based Microfluidic Chip Based on a Multicolor Fluorescence Carbon Dot Biosensor for Visual Determination of Multiantibiotics in Aquatic Products

et al. 2022

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Excessive use of antibiotics in aquaculture severely endangers human health and ecosystems, which has raised significant concerns in recent years. However, conventional laboratory-based approaches regularly required time or skilled manpower. Herein, we propose a point-of-care-testing (POCT) biosensor detection device for the simultaneous determination of multiantibiotics without complex equipment or professional operators. A laser-printed paper-based microfluidic chip loaded with multicolor fluorescence nanoprobes (mCD-μPAD) was developed to rapidly detect sulfamethazine (SMZ), oxytetracycline (OTC), and chloramphenicol (CAP) on-site. These “fluorescence off” detection probes composed of carbon dots (CDs) conjugated with aptamers (donor) and MoS2 nanosheets (acceptor) (CD-apt-MoS2) were based on Förster resonance energy transfer. Upon the addition of target antibiotics, the significantly recovered fluorescence signal on the μPAD can be sensitively perceived by employing a 3D-printed portable detection box through a smartphone. Under optimal conditions, this μPAD allowed for a rapid response of 15 min toward SMZ, OTC, and CAP with considerable sensitivities of 0.47, 0.48, and 0.34 ng/mL, respectively. In shrimp samples, the recoveries were 95.2–101.2, 96.4–105, and 96.7–106.1% with RSD below 6%. This paper-based sensor opens an avenue for on-site, high-throughput, and rapid detection methods and can be widely used in POCT in food safety.

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confidence: 99%

Laser-Printed Paper-Based Microfluidic Chip Based on a Multicolor Fluorescence Carbon Dot Biosensor for Visual Determination of Multiantibiotics in Aquatic Products

et al. 2022

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“…Transducer elements are usually separate chemical or physical sensing elements that convert biological reactions into easily detectable signals. Fluorescent nanomaterials are selected as the transducer element due to their excellent optical properties, which can significantly improve the sensitivity of fluorescence detection [22][23][24][25]. Among the fluorescent nanomaterials used for sensing, quantum dots (QDs) show the advantages of stable physicochemical properties, good biocompatibility, dispersity, and simple surface functionalization [26].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Fluorescent Quantum Dots Nanocomposites in Food Contaminants Analysis: Current Challenges and Opportunities

Xiong

Zhang

Qin

et al. 2022

IJMS

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The presence of food contaminants can cause foodborne illnesses, posing a severe threat to human health. Therefore, a rapid, sensitive, and convenient method for monitoring food contaminants is eagerly needed. The complex matrix interferences of food samples and poor performance of existing sensing probes bring significant challenges to improving detection performances. Nanocomposites with multifunctional features provide a solution to these problems. The combination of the superior characteristics of magnetic nanoparticles (MNPs) and quantum dots (QDs) to fabricate magnetic fluorescent quantum dots (MNPs@QDs) nanocomposites are regarded as an ideal multifunctional probe for food contaminants analysis. The high-efficiency pretreatment and rapid fluorescence detection are concurrently integrated into one sensing platform using MNPs@QDs nanocomposites. In this review, the contemporary synthetic strategies to fabricate MNPs@QDs, including hetero-crystalline growth, template embedding, layer-by-layer assembly, microemulsion technique, and one-pot method, are described in detail, and their advantages and limitations are discussed. The recent advances of MNPs@QDs nanocomposites in detecting metal ions, foodborne pathogens, toxins, pesticides, antibiotics, and illegal additives are comprehensively introduced from the perspectives of modes and detection performances. The review ends with current challenges and opportunities in practical applications and prospects in food contaminants analysis, aiming to promote the enthusiasm for multifunctional sensing platform research.

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“…Fluorescent nanomaterials usually include semiconductor quantum dots, carbon-based uorescent nanomaterials, and rare-earth-doped upconversion luminescent materials. [1][2][3] Due to their excellent optical stability, tunable morphology and size, and multi-functionality, uorescent nanomaterials are extensively used in various elds including uorescent probes, optoelectronic components, 4,5 solar energy conversion, 6,7 bioimaging, 8 and photocatalysis. 9 Recently, nanomaterial uorescence probes have already attracted intensive attention for their promising applications in uorescence analysis, 10,11 substance detection 12,13 and biological imaging.…”

Section: Introductionmentioning

confidence: 99%

Dual-emission carbon dots for sensitive fluorescence detection of metal ions and ethanol in water

Gong

2022

Anal. Methods

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On-off-on fluorescent nanosensing: Materials, detection strategies and recent food applications

Cited by 123 publications

References 118 publications

Laser-Printed Paper-Based Microfluidic Chip Based on a Multicolor Fluorescence Carbon Dot Biosensor for Visual Determination of Multiantibiotics in Aquatic Products

Laser-Printed Paper-Based Microfluidic Chip Based on a Multicolor Fluorescence Carbon Dot Biosensor for Visual Determination of Multiantibiotics in Aquatic Products

Magnetic Fluorescent Quantum Dots Nanocomposites in Food Contaminants Analysis: Current Challenges and Opportunities

Dual-emission carbon dots for sensitive fluorescence detection of metal ions and ethanol in water

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