A dual (colorimetric and fluorometric) detection scheme for glutathione and silver (I) based on the oxidase mimicking activity of MnO2 nanosheets

Ma, Zhangyan; Wu, Tengteng; Li, Peipei; Liu, Meiling; Huang, Si; Li, Haitao; Zhang, Youyu; Yao, Shouzhuo

doi:10.1007/s00604-019-3613-4

Cited by 49 publications

(18 citation statements)

References 33 publications

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“…Green-synthesized AI-MnO NAPs presented a broad absorption band with two characteristic absorption peaks at 380 nm (biological phytomolecules) and 460 nm (Mn-O) (Figure 3b). The slight redshift in the absorption maxima of Mn-O was observed compared to reported works [42,43]. This might be attributed to the fact that the donation of non-bonding electrons from phytomolecules to the vacant d-orbital of Mn facilitated the electron transition, which shifted the absorption maxima to the higher wavelength [44].…”

Section: Uv-visible and Ftir Analysismentioning

confidence: 58%

Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Khan

Shahid

et al. 2020

Biomolecules

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We report the synthesis of MnO nanoparticles (AI-MnO NAPs) using biological molecules of Abutilon indicum leaf extract. Further, they were evaluated for antibacterial and cytotoxicity activity against different pathogenic microbes (Escherichia coli, Bordetella bronchiseptica, Staphylococcus aureus, and Bacillus subtilis) and HeLa cancerous cells. Synthesized NAPs were also investigated for photocatalytic dye degradation potential against methylene blue (MB), and adsorption activity against Cr(VI) was also determined. Results from Scanning electron microscope (SEM), X-ray powder diffraction (XRD), Energy-dispersive X-ray (EDX), and Fourier-transform infrared spectroscopy (FTIR) confirmed the successful synthesis of NAPs with spherical morphology and crystalline nature. Biological activity results demonstrated that synthesized AI-MnO NAPs exhibited significant antibacterial and cytotoxicity propensities against pathogenic microbes and cancerous cells, respectively, compared with plant extract. Moreover, synthesized AI-MnO NAPs demonstrated the comparable biological activities results to standard drugs. These excellent biological activities results are attributed to the existence of the plant’s biological molecules on their surfaces and small particle size (synergetic effect). Synthesized NAPs displayed better MB-photocatalyzing properties under sunlight than an ultraviolet lamp. The Cr(VI) adsorption result showed that synthesized NAPs efficiently adsorbed more Cr(VI) at higher acidic pH than at basic pH. Hence, the current findings suggest that Abutilon indicum is a valuable source for tailoring the potential of NAPs toward various enhanced biological, photocatalytic, and adsorption activities. Consequently, the plant’s biological molecule-mediated synthesized AI-MnO NAPs could be excellent contenders for future therapeutic applications.

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Section: Uv-visible and Ftir Analysismentioning

confidence: 58%

Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Khan

Shahid

et al. 2020

Biomolecules

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“…Recently, Liu et al described a colorimetric and fluorescence dual mode assay for GSH and Ag + detection based on the MnO 2 nanosheets, which can catalyze OPD to be oxidized to OPDox with strong fluorescent and yellow color ( Scheme 10 ). 15 The sensing mechanism is attributed to the “inhibition and protection” to the oxidase-like property of MnO 2 nanosheets. GSH could inhibit the oxidation of OPD since it can easily reduce MnO 2 nanosheets into non-enzymatic-like mimic Mn 2+ , resulting in the fluorescence intensity decrease and color fade.…”

Section: Opd-based Sensors For Organic Moleculesmentioning

confidence: 99%

Fluorescent and Colorimetric Sensors Based on the Oxidation of o-Phenylenediamine

Ren

Huang

et al. 2020

ACS Omega

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o -Phenylenediamine (OPD) can be readily oxidized by several types of oxidants to generate fluorescent 2,3-diaminophenazine (oxidized OPD, OPDox). The unique fluorescence response process during the oxidation of OPD provides an important model for the design of novel sensors. In recent years, a series of fluorescent and colorimetric sensors have been developed based on the oxidation of OPD. In this review, fluorescent and colorimetric sensors for the detection of metal ions and small organic molecules are discussed. These sensing processes exhibit distinguishable and prominent fluorescent and colorimetric responses. The sensing systems include autocatalytic reactions and using nanomaterials, carbon dots, or fluorophore labeled DNA as reference fluorophore for fluorescent and colorimetric detection.

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“…Thus, dual functional colorimetric and fluorometric sensing is performed by combining fluorescence probes with Ag NPs. [17][18][19] Meanwhile, carbon-based materials such as carbon dots (CDs), carbon nanotubes, and graphene have received much attention due to their outstanding advantages such as high optical absorptivity, chemical stability, biocompatibility, and low toxicity, 20 making them ideal for bioimaging 21 and medical diagnosis. 22 Due to the above advantage of Ag NPs and CDs, we herein synthesized nanocomposites consisting of Ag NPs and CDs (Ag-CDs).…”

Section: Introductionmentioning

confidence: 99%

A Dual‐Functional Lactate Sensor Based on Silver Nanoparticle‐coated Carbon Dots

Park

Min

et al. 2021

Bulletin Korean Chem Soc

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Herein, a silver nanoparticle-coated carbon dots (Ag-CDs) was fabricated to detect lactate using colorimetric and fluorometric methods. When the Ag-CDs were decomposed by H 2 O 2 produced from the lactate oxidase (LOx) catalytic reaction, the color of the Ag-CDs solution changed from yellowish to transparent, and the fluorescence of the quenched CDs was simultaneously recovered. Silver nanoparticles (Ag NPs) decomposition was confirmed by X-ray photoelectron spectroscopy, revealing an increase in Ag N bond peaks due to ionization of Ag NPs. The Ag-CDs sensor could recognize lactate specifically, even in the presence of numerous potentially interfering biomarkers. The fabricated sensor displayed good sensitivity and selectivity, with a low detection limit of 0.6 μM and 10 μM for H 2 O 2 and lactate sensing, respectively. Finally, the Ag-CDs sensor could be applied to determination of lactate to intracellular imaging in 4T1 cells using confocal microscopy.

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A dual (colorimetric and fluorometric) detection scheme for glutathione and silver (I) based on the oxidase mimicking activity of MnO2 nanosheets

Cited by 49 publications

References 33 publications

Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Fluorescent and Colorimetric Sensors Based on the Oxidation of o-Phenylenediamine

A Dual‐Functional Lactate Sensor Based on Silver Nanoparticle‐coated Carbon Dots

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