Influence of doping ion, capping agent and pH on the fluorescence properties of zinc sulfide quantum dots: Sensing of Cu2+ and Hg2+ ions and their biocompatibility with cancer and fungal cells

Desai, Mittal L.; Deshmukh, Balaji; Lenka, Nibedita; Haran, Varun; Jha, Sanjay Kumar; Basu, Hirakendu; Singhal, Rakesh Kumar; Sharma, Purnima; Kailasa, Suresh Kumar; Kim, Ki‐Hyun

doi:10.1016/j.saa.2018.11.027

Cited by 40 publications

(16 citation statements)

References 45 publications

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“…30−32 In view of this, the fluorescent-based probes have proven to be a hallmark analytical platform for the analysis of Hg 2+ ions because of their notable advantages, that is, rapidity, simplicity, cost-effectiveness, sensitivity, and on-site monitoring applications. 33−37 Thus, they have been proven as alternative analytical platforms to several traditional tools including electrochemical method, inductively coupled plasma mass spectrometry, auger electron spectroscopy, and atomic absorption spectroscopy. 38−41 However, some of the fluorescent probes require specific chemicals, toxic chemicals, and multistep reactions, which limits their environmental applications.…”

Section: Introductionmentioning

confidence: 99%

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg²⁺ Ions and Cell Imaging

et al. 2019

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In this study, water-soluble emissive carbon dots (CDs) are effectively fabricated with specific optical properties and colors by acid oxidation of muskmelon (Cucumis melo) fruit, which are termed as C. melo CDs (CMCDs). The fluorescence properties of CMCDs were tuned by controlling the experimental conditions that allow them to emit different colors, that is, blue (B-), green (G-), and yellow (Y-) CMCDs, with different emission wavelengths at 432, 515, and 554 nm when excited at 342, 415, and 425 nm, respectively. The fabricated multicolor-emissive CDs were confirmed by various analytical techniques. The sizes of B-, G-, and Y-CMCDs were found to be ∼3.5, ∼4.3, and ∼5.8 nm, respectively. The as-prepared CMCDs display stable emissions with quantum yields of 7.07, 26.9, and 14.3% for the three CMCDs, which could act as a promising probe for the selective detection of Hg2+ ions. Upon the addition of Hg2+ ions, the fluorescence intensity of G-CMCDs at 515 nm was quenched largely than that of B- and Y-CMCDs. The spectroscopic results display that the G-CMCDs acted as a sensor for the detection of Hg2+ ions with a wide linear range from 1.0 to 25 μM (R2 = 0.9855) with a detection limit of 0.33 μM. This method was successfully applied to detect Hg2+ ions in biological and water samples. The fabricated multicolor-emissive CMCDs possess the cell (Cunninghamella elegans, Aspergillus flavus, and Rhizoctonia solani) imaging property, suggesting the biocompatible nature for multicolor imaging of various cells.

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Section: Introductionmentioning

confidence: 99%

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg²⁺ Ions and Cell Imaging

et al. 2019

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“…The QDs' part is a QDs-conjugated goat anti-mouse IgG. Antibody-conjugated QDs are usually formed by cross-coupling reactions, where antibody molecules bind to functional groups such as carboxyl groups or amino groups on the QDs' surface [13,14]. In this study, we used core/shell CdSe/ZnS water-soluble quantum dots stabilized with carboxyl ligands and the carbodiimide coupling reaction using EDC (1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride).…”

Section: Resultsmentioning

confidence: 99%

A Group of Complexes Based on PAMAM and Quantum Dots Used in Clinical Immunoassays

et al. 2020

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We report a group of complexes used in clinical immunoassays. The complexes include a PAMAM-conjugated goat anti-rabbit IgG and a QDs-conjugated goat anti-mouse IgG. When rabbit anti-antigen and mouse anti-antigen are added, the corresponding antigen will be detected. The experiment, using the complexes, is simple, convenient, short in time, and short in steps. It is also applicable to different experiment methods, like to be used with FCM (flow cytometry), ICC (immunocytochemistry), and IHC (immunohistochemistry) to detect many kinds of antigens.

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“…However, because of the low level of Cu 2+ and the complex matrix from real samples, these techniques are commonly needed to hyphenated with separation techniques such as liquid-liquid extraction (9), solid-phase extraction (10) to improve the selectivity and sensitivity, which is time-consuming and easily causing contamination. Hence, to directly detect Cu 2+ in actual samples, fluorescence methods (11)(12)(13)(14)(15)(16)(17)(18) based on various probes have been attracting more and more attentions due to the advantages of simple, cheap, high sensitivity, good selectivity and fast response.…”

Section: Introductionmentioning

confidence: 99%

Ratiometric Fluorescent Paper‐Based Sensor Based on CdTe Quantum Dots and Graphite Carbon Nitride Hybrid for Visual and Rapid Determination of Cu²⁺ in Drinks

Zhan

Ruan

et al. 2020

Photochem & Photobiology

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A simple and effective ratiometric fluorescence sensor of CdTe QDs/GCNNs for on‐site and rapid analysis of Cu2+ has been established by mixing physically CdTe QDs and graphite carbon nitride (GCNNs). Two emissions peaks of CdTe QDs at 572 nm and GCNNs at 436 nm are both excitated at 340 nm. Under a UV lamp, fluorescent of traffic yellow CdTe QDs is linearly quenched by Cu2+ (as the detection signal), while blue GCNNs remains unchanged (as the reference), resulting in a distinguishable color change gradually from pink yellow to blue. The limit of detection (LOD) of this new sensor for Cu2+ is as low as 0.47 ng mL−1 with 1.4 % RSD. The established method has been successfully applied to detection of Cu2+ in various drinks with satisfactory results. Moreover, a paper‐based sensor, which has been prepared by soaking cellulose acetate membrane in CdTe QDs/GCNNs sensor solution, has a wide semiquantitative detection range for Cu2+ (0.01 ~ 5.0 μg mL−1). It has realized successfully on‐site and rapid determination of Cu2+ in red wine without any pretreatment procedure and is of great promotion and application value in determination of Cu2+ in liquid samples.

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Influence of doping ion, capping agent and pH on the fluorescence properties of zinc sulfide quantum dots: Sensing of Cu2+ and Hg2+ ions and their biocompatibility with cancer and fungal cells

Cited by 40 publications

References 45 publications

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg²⁺ Ions and Cell Imaging

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg²⁺ Ions and Cell Imaging

A Group of Complexes Based on PAMAM and Quantum Dots Used in Clinical Immunoassays

Ratiometric Fluorescent Paper‐Based Sensor Based on CdTe Quantum Dots and Graphite Carbon Nitride Hybrid for Visual and Rapid Determination of Cu²⁺ in Drinks

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Influence of doping ion, capping agent and pH on the fluorescence properties of zinc sulfide quantum dots: Sensing of Cu2+ and Hg2+ ions and their biocompatibility with cancer and fungal cells

Cited by 40 publications

References 45 publications

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg2+ Ions and Cell Imaging

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg2+ Ions and Cell Imaging

A Group of Complexes Based on PAMAM and Quantum Dots Used in Clinical Immunoassays

Ratiometric Fluorescent Paper‐Based Sensor Based on CdTe Quantum Dots and Graphite Carbon Nitride Hybrid for Visual and Rapid Determination of Cu2+ in Drinks

Contact Info

Product

Resources

About

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg²⁺ Ions and Cell Imaging

Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg²⁺ Ions and Cell Imaging

Ratiometric Fluorescent Paper‐Based Sensor Based on CdTe Quantum Dots and Graphite Carbon Nitride Hybrid for Visual and Rapid Determination of Cu²⁺ in Drinks