Study of surface enhanced fluorescence of CdSeS/ZnS alloyed quantum dots using cytop layer as a dielectric spacer

Mahata, T.; Das, Gour Mohan; Dantham, Venkata Ramanaiah

doi:10.1016/j.saa.2022.121739

Cited by 4 publications

(2 citation statements)

References 46 publications

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“…Many new nanomaterials combined ZnS with various nanostructures and have been used in a wide range of applications because of their unique physical properties. At the same time, ZnS has been widely used in the design of fluorescence sensors because of its excellent thermal stability, adjustable fluorescence characteristics, high fluorescence quantum yield, as well as its non-toxic, stable chemical structure [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

Xu,

Chen,

Chen

et al. 2024

Coatings

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Cu2+ has increasingly become a great threat to the natural environment and human health due to its abundant content and wide application in various industries. DL-Mercaptosuccinic acid and ZnS-modified Fe3O4 nanocomposites were designed, synthesized, and applied in the determination of Cu2+. The prepared nanocomposites were characterized by scanning electron microscopy (SEM), transmission electron microscopes (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometer (VSM), and thermogravimetric analyzer (TG). The magnetic fluorescent nanoprobe exhibited highly selective and sensitive fluorescence-quenching characteristics with Cu2+ ions. The fluorescence detection linear range was 0–400 μM, with the detection limit being 0.489 μM. In addition, the magnetic fluorescent nanoprobe exhibited a high adsorption and removal rate for Cu2+. It had been successfully applied to detect Cu2+ in real water samples with a satisfactory recovery rate. The magnetic fluorescent nanoprobe could simultaneously realize the functions of enrichment, quantitative detection, and separation, reduce the pollution of copper ions and probes, and establish an environment-friendly detection method. Consequently, the magnetic fluorescent nanoprobe offered a new pathway for the removal and detection of not only Cu2+ but also other heavy metal ions in water.

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Section: Introductionmentioning

confidence: 99%

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

Xu,

Chen,

Chen

et al. 2024

Coatings

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“…In addition, the SEF technique demands high-quality plasmon-active substrates and provides low reproducibility and repeatability. 2 One can use the photonic nanojet (PNJ) -assisted fluorescence microscopic technique to overcome all these problems. In contrast to the conventional fluorescence microscopic (CFM) technique, the excitation light is focused on the sample through a single dielectric microsphere in this new technique.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study on photonic nanojet-assisted fluorescence microscopic technique

Joshi

Dantham

2023

Women in Optics and Photonics in India 2022

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Recently, the photonic nanojet-assisted fluorescence microscopic technique has been helpful in enhancing fluorescence signals of various samples at ultralow concentrations. In this technique, the fluorescence enhancement depends upon several parameters, such as the microsphere's size and refractive index, the surrounding medium's refractive index, and the excitation light's wavelength. Therefore, all these parameters' role on the enhancement is reported here.

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Luminescent ZnSe/ZnO Heterostructures for Photocatalytic Degradation of Azophloxine Dye and Bioimaging Applications

Natarajan,

Sengan

et al. 2024

Luminescence

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Herein, we demonstrate a simple hydrothermal route to synthesizing ZnSe/ZnO type II heterostructure using L‐cysteine as a capping agent. The use of nanomaterials in bioimaging and photocatalysis towards the degradation of Azophloxine dye is of potential interest. The synthesized ZnSe/ZnO nanomaterials were characterized by UV–Vis absorption spectroscopy, fluorescence spectroscopy, IR spectroscopy, scanning electron microscopy, transmission electron microscopy, X‐ray diffraction, and X‐ray photoelectron spectroscopy. It exhibits a strong sharp emission at 465 nm in fluorescence spectroscopy. The synthesized nanomaterials were used as an excellent fluorescence probe for imaging live‐cell bacteria such as E. coli and S. aureus compared with the commercial staining dye PI (propidium iodide). The synthesized ZnSe/ZnO possess more photo‐stability and showed excellent photocatalytic activity for the degradation of azophloxine dye under sunlight.

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Study of surface enhanced fluorescence of CdSeS/ZnS alloyed quantum dots using cytop layer as a dielectric spacer

Cited by 4 publications

References 46 publications

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

A Multifunctional Magnetic Fluorescent Nanoprobe for Copper(II) Using ZnS-DL-Mercaptosuccinic Acid-Modified Fe3O4 Nanocomposites

Theoretical study on photonic nanojet-assisted fluorescence microscopic technique

Luminescent ZnSe/ZnO Heterostructures for Photocatalytic Degradation of Azophloxine Dye and Bioimaging Applications

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