Signal-on bimodal sensing glucose based on enzyme product-etching MnO2 nanosheets for detachment of MoS2 quantum dots

Chen, Lingzhi; Huang, Xueqin; Zeng, Xiangbo; Fang, Guiting; Chen, Weijian; Zhou, Haibo; Zhong, Xing; Cai, Huaihong

doi:10.1016/j.cclet.2021.01.030

Cited by 18 publications

(7 citation statements)

References 25 publications

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“…Fluorescence signal changes in MoS 2 @MnO 2 NFs before and after the addition of H 2 O 2 were further characterized, as shown in Figure D. In MoS 2 @MnO 2 NFs, the fluorescence of MoS 2 dots at 400 nm was blocked by the MnO 2 nanosheet-induced fluorescence quenching effect; therefore, MoS 2 @MnO 2 NFs maintained a very low fluorescent signal. However, MoS 2 @MnO 2 NFs had a marked fluorescence recovery after H 2 O 2 addition, owing to the release of fluorescent MoS 2 dots from the decomposed MoS 2 @MnO 2 NFs.…”

Section: Resultsmentioning

confidence: 99%

Self-Assembly MoS₂@MnO₂ Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H₂O₂ and Photothermal Therapy

Lin,

Huang,

et al. 2023

ACS Appl. Nano Mater.

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Section: Resultsmentioning

confidence: 99%

Self-Assembly MoS₂@MnO₂ Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H₂O₂ and Photothermal Therapy

Lin,

Huang,

et al. 2023

ACS Appl. Nano Mater.

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“…Chen et al proposed a FRET-based fluorescent/magnetic dual-mode sensing strategy for the detection of glucose using MoS 2 QDs−MnO 2 NSs. 192 The fluorescence of MoS 2 QDs was quenched by MnO 2 NSs via FRET. In the presence of enzyme product H 2 O 2 , produced by the redox reaction between glucose and GOx, MnO 2 could be disintegrated to soluble Mn 2+ ions, resulting in the fluorescence recovery of MoS 2 QDs and enhancement in the MRI signal.…”

Section: Sensing Applicationsmentioning

confidence: 99%

“…Fluorescent metal sulfide QDs like CdSe/ZnS, Ag 2 S, FeS 2 , WS 2 , and MoS 2 with good light stability and low cost are widely used in the fields of fluorescence sensing and optical imaging and have been used in FRET-based sensing systems using MnO 2 NSs as the quencher. − …”

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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“…Two-dimensional transition metal dichalcogenides (2D-TMD) have promising potential in electrochemical H 2 O 2 sensing due to the high electrocatalytic activity, tunable electronic band and crystalline structure, abundant active sites for adsorption and reaction, small thickness for charge transfer, and 2D layer exposure for functionalization at an atomic level. [15][16][17] Besides, singlelayer or multi-layer 2D-TMD materials exhibit many unique properties compared to their bulks, such as conversion from indirect to direct bandgap semiconductors. 17 Among the various types of 2D-TMD materials, molybdenum diselenide (MoSe 2 ) has a small bandgap (∼1.2 eV) and large interlayer spacing (∼0.65 nm), thus favoring electrochemical reduction of H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

Plasma functionalized MoSe₂ for efficient nonenzymatic sensing of hydrogen peroxide in ultra‐wide pH range

Luo

Wu²,

et al. 2022

SmartMat

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Enzymatic sensors have inherent problems such as the low stability and limited pH range in industrial and biomedical applications and therefore, more efficient nonenzymatic sensors are highly desirable. Herein, plasmafunctionalized defective MoSe 2 is prepared and studied as a highly efficient catalyst for electrochemical sensing of H 2 O 2 . Experiments and theoretical computations show that the plasma-induced Se multi-vacancies and nitrogen dopants generate new active sites, expose more edge active surfaces, narrow the bandgap, and strengthen binding with the •OH intermediate, which imparts new fundamental knowledge about the roles of defects in catalysis. The defective MoSe 2 -catalyzed sensor delivers competitive performance in hydrogen peroxide detection such as a low detection limit of 12.6 nmol/L, wide operational pH range of 1−13, good long-term stability, and high selectivity. The portable sensor produced by screen printing confirms the excellent commercial potential and in

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Signal-on bimodal sensing glucose based on enzyme product-etching MnO2 nanosheets for detachment of MoS2 quantum dots

Cited by 18 publications

References 25 publications

Self-Assembly MoS₂@MnO₂ Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H₂O₂ and Photothermal Therapy

Self-Assembly MoS₂@MnO₂ Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H₂O₂ and Photothermal Therapy

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

Plasma functionalized MoSe₂ for efficient nonenzymatic sensing of hydrogen peroxide in ultra‐wide pH range

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Signal-on bimodal sensing glucose based on enzyme product-etching MnO2 nanosheets for detachment of MoS2 quantum dots

Cited by 18 publications

References 25 publications

Self-Assembly MoS2@MnO2 Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H2O2 and Photothermal Therapy

Self-Assembly MoS2@MnO2 Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H2O2 and Photothermal Therapy

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

Plasma functionalized MoSe2 for efficient nonenzymatic sensing of hydrogen peroxide in ultra‐wide pH range

Contact Info

Product

Resources

About

Self-Assembly MoS₂@MnO₂ Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H₂O₂ and Photothermal Therapy

Self-Assembly MoS₂@MnO₂ Nanoflowers for the Fluorescence/Magnetic Resonance Dual-Modal Sensing of H₂O₂ and Photothermal Therapy

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

Plasma functionalized MoSe₂ for efficient nonenzymatic sensing of hydrogen peroxide in ultra‐wide pH range