An Up-conversion signal probe-MnO2 nanosheet sensor for rapid and sensitive detection of tetracycline in food

Li, Rui; Haruna, Suleiman A.; Ali, Shujat; Xu, Jing; Ouyang, Qin; Li, Huanhuan; Chen, Quansheng

doi:10.1016/j.saa.2022.120855

Cited by 8 publications

(5 citation statements)

References 46 publications

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“…As displayed in Scheme 1, benzoic acids were used as coordinate bonding sites of the "V" shaped ligand, because benzoic acids not only can sensitize Eu 3+ and Tb 3+ but also have enough structural rigidity to promote the crystallization process of Ln-MOFs. "OvC-NH" groups were used as hydrogen bonding sites, which originated from their advantages in molecular recognitions [31][32][33][34][35][36][37] and supramolecular self-assembly process. [38][39][40][41] Considering further the synthetic simplicity and functionality of the ligand, o-phenylenediamine was selected as the vertex of the "V" shaped ligand.…”

Section: Introductionmentioning

confidence: 99%

Construction of a series of Ln-MOF luminescent sensors based on a functional “V” shaped ligand

Liu

Kou

et al. 2022

Dalton Trans.

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Section: Introductionmentioning

confidence: 99%

Construction of a series of Ln-MOF luminescent sensors based on a functional “V” shaped ligand

Liu

Kou

et al. 2022

Dalton Trans.

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“…Recently, the same group used a similar LET-based aptamer-modified UCNPs for tetracycline (TC) detection in food. 180 They conjugated a TC-specific aptamer on UCNPs, which changed the structural conformation of the aptamer in the presence of TC, causing the separation of UCNPs and MnO 2 NSs to recover luminescence. Proanthocyanidins (PAs), a class of polyphenols responsible for diseases like Alzheimer's and Parkinson's, were monitored using FRET-based assay involving thiamine (VB1), Au/Ag alloy nanoclusters (alloy NCs), and MnO 2 NSs as FRET conjugates (Figure 35a).…”

Section: Sensing Applicationsmentioning

confidence: 99%

“…Fluorescent metal nanodots, such as UCNPs, gold nanoclusters (AuNCs) and silver nanoclusters (AgNCs), with their unique optical properties, large Stokes shift, enhanced penetration ability, and negligible autofluorescence are useful in sensing applications. Over a period, a good number of sensing systems based on fluorescent metal nanodots and MnO 2 NSs are used in sensing and imaging applications. − …”

Section: Sensing Applicationsmentioning

confidence: 99%

“…A linear calibration plot was obtained in the range of 0.1–5000 ng/mL with a LOD of 0.05 ng/mL. Recently, the same group used a similar LET-based aptamer-modified UCNPs for tetracycline (TC) detection in food . They conjugated a TC-specific aptamer on UCNPs, which changed the structural conformation of the aptamer in the presence of TC, causing the separation of UCNPs and MnO 2 NSs to recover luminescence.…”

Section: Sensing Applicationsmentioning

confidence: 99%

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Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Hiremath

Banerjee

Chatterjee

2022

ACS Appl. Nano Mater.

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In the past decade, a variety of MnO 2 nanostructures have been used in chemosensing applications because of their unique redox properties, structural diversity, and broad absorption band, which makes them good energy acceptors. The most common strategy in Forster (or fluorescence) resonance energy transfer (FRET)-based chemosensing assays is to use low-dimensional fluorescent dots like carbon-based dots, metal dots, and even fluorescent dyes to form donor−acceptor pairs with 2D MnO 2 nanosheets (NSs). This review is a collection of the current library on fluorescent nanodots and MnO 2 NSs-based FRET conjugates as sensing platforms with a focus on highlighting the strategies involved in the detection of various analytes. Commonly, an analyte-triggered redox reaction results in the decomposition of MnO 2 NSs, leading to the release of fluorescent nanodots in solution for the turn-on detection of various reducing species. We intend to elaborately discuss the systematic upgradation of detection strategies involving fluorescent dots@2D MnO 2 NSs. Recently, a cascade of redox reactions was judiciously employed to target several bioanalytes involving a fluorescent dots@MnO 2 NSs FRET conjugate in a selective and sensitive manner. These sensing assays are categorized by the use of different fluorescent nanodots [carbon dots (CDs) and graphene quantum dots (GQDs), polymer dots, metal dots, etc.] with 2D MnO 2 NSs as FRET pairs in different sensing applications. Further, the analytes were categorized as reducing species, oxidants, enzymes, microbes, etc. The focus was paid to the sensing efficiency of the analytical tool. As a part of the study, a brief account of the synthesis of nanodots and MnO 2 NSs, their properties, and the FRET mechanism is also included. In a few cases, the sensing mechanism follows an inner filter effect without a prerequisite of the distance between the fluorophore and quencher units in the sensing of analytes, which are also covered in this collection. The available literature indicates a bright future for these FRET-based contemporary sensing strategies as environmentally benign, cost-effective, label-free techniques, which are discussed in the end.

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“…We used it for rapid, efficient and selective detection of copper ions within 3 min with a detection limit (LOD) as low as 42 nM. Compared with other carbon dots, DN-CDs showed better and stable up-conversion fluorescence, which could convert low energy light into high energy radiation through a nonlinear optical process, avoiding in-terference with biological background luminescence and achieving good photon tissue penetration [45][46][47][48]. This would compensate for the disadvantages of down-conversion fluorescence carbon dots, and has great potential for detecting metals in organisms.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Up-Conversion Fluorescence N-Doped Carbon Dots with High Selectivity and Sensitivity for Detection of Cu2+ Ions

et al. 2023

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Carbon dots have drawn extensive attention in the detection of metal ions with good stability, excellent biocompatibility and low toxicity. Meanwhile, the quantum yield, response rate and the detection mechanism for Cu2+ ions are vital to their development and application. To obtain more selective and sensitive materials to detect Cu2+ ions, N-doped carbon dots (DN-CDs) were synthesized by a one-step hydrothermal method using citric acid as the carbon source and diethylenetriamine (DETA) as the nitrogen source. The obtained DN-CDs exhibited stable and intense blue light emission and special near-infrared up-conversion fluorescence at 820 nm, attributed to the effect of introducing N atoms into the structure of carbon dots. Due to the dynamic quenching of the DN-CDs by Cu2+ ions, the fluorescence intensity (λex = 820 nm) of DN-CDs was quantitatively decreased in the presence of Cu2+ ions. The DN-CDs had a rapid response within 3 min. The DN-CD system exhibited a linear relationship with a concentration range from 2.5 to 50 µM and low detection limit (LOD) of 42 nM. After careful investigation, an interesting conclusion was proposed: N-doped CDs with N/O = 1:1 or higher with relatively abundant N atoms prefer to detect Cu2+ ions while those with N/O = 1:2 or lower prefer to detect Fe3+ ions.

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An Up-conversion signal probe-MnO2 nanosheet sensor for rapid and sensitive detection of tetracycline in food

Cited by 8 publications

References 46 publications

Construction of a series of Ln-MOF luminescent sensors based on a functional “V” shaped ligand

Construction of a series of Ln-MOF luminescent sensors based on a functional “V” shaped ligand

Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Synthesis of Up-Conversion Fluorescence N-Doped Carbon Dots with High Selectivity and Sensitivity for Detection of Cu2+ Ions

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An Up-conversion signal probe-MnO2 nanosheet sensor for rapid and sensitive detection of tetracycline in food

Cited by 8 publications

References 46 publications

Construction of a series of Ln-MOF luminescent sensors based on a functional “V” shaped ligand

Construction of a series of Ln-MOF luminescent sensors based on a functional “V” shaped ligand

Review of 2D MnO2 Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications

Synthesis of Up-Conversion Fluorescence N-Doped Carbon Dots with High Selectivity and Sensitivity for Detection of Cu2+ Ions

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Review of 2D MnO₂ Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications