Using zinc ion-enhanced fluorescence of sulfur quantum dots to improve the detection of the zinc(II)-binding antifungal drug clioquinol

Zhao, Jie; Fan, Zhefeng

doi:10.1007/s00604-019-4020-6

Cited by 36 publications

(16 citation statements)

References 34 publications

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“…However, very few synthesis methods of Sdots are available concerning the synthetic procedures and vivid implementation of the Sdots. − , The first synthesis of Sdots was achieved by the oxidation of S 2– (CdS QDs as starting material) to the elemental sulfur using HNO 3 through phase interfacial reaction, and the quantum yield (QY) was obtained as 0.549% . Except this method, all other methods were based on the top-down approach where bulk sulfur was employed as a starting material. − , However, longer reaction time is essential for producing fluorescent Sdots by etching bulk sulfur using NaOH (more than 5 days), and hydrogen peroxide assisted top-down approach. , Further, the reaction time was reduced by hydrothermal and ultrasonication method using bulk sulfur. , Presently, very limited applications have been documented employing Sdots, and thereby the field requires further advancement. − …”

Section: Introductionsupporting

confidence: 54%

“…Light-emitting nonmetallic nanodots such as carbon, silicon, and phosphorus dots, have been widely studied for their excellent optical properties and versatile/promising applications. − Very recently, another nonmetallic nanodot, named “sulfur quantum dots” (Sdots) is added up into the family of pure elemental quantum dots (Qdots). − Since long back, the third most Earth-abundant element sulfur has been widely used for diverse applications in various morphological forms such as nano, micro, or bulk state. − Although, nanoscale sulfur is efficient in multifaceted applications such as lithium–sulfur batteries, for water purification, as fungicides and pesticides, as an antibacterial, photocatalyst, etc. ,− But such types of sulfur particles possess some limitation including nonfluorescence, larger size, low water solubility, and toxicity . To overcome the drawbacks of nanosized sulfur, luminescent ultrasmall sized sulfur was reported using phase interfacial reaction by Li group .…”

Section: Introductionmentioning

confidence: 99%

“…After this report, Sdots was synthesized using elemental sulfur by the assembly fission mechanism . This straightforward preparation method of Sdots further paved the way to develop a more efficient method. − , Moreover, these luminescent nanodots have shown excellent photophysical properties and so far has been employed for cellular imaging, white light-emitting diodes, and sensing. − Sdots have not yet been investigated extensively due to the complex reaction process in synthesis method.…”

Section: Introductionmentioning

confidence: 99%

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Luminescent Sulfur Quantum Dots for Colorimetric Discrimination of Multiple Metal Ions

Arshad

2020

ACS Appl. Nano Mater.

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The classical chemistry of sodium thiosulfate was applied to synthesize luminescent Sdots where elemental sulfur produced in situ was etched with NaOH. This method notably reduces the synthesis time of Sdots in comparison to the previously reported etching technique of bulk sulfur. The assynthesized Sdots exhibited excitation dependent photoluminescence with a QY of 2.5%, photostabality under UV light irradiation, excellent dispersibility in aqueous medium, and also the stability even after several weeks. Notably, no emission was observed due to the oxidation of PEG-400 during the course of reaction. The Sdots was then employed as a dual function probe for the sensing of metal ions. Using fluorimetric method, Sdots showed preferential selectivity toward the Co 2+ metal ions. However, a single probe Sdots can colorimetrically distinguish multiple metal ions such as Co 2+ , Cr 6+ , and Pb 2+ by displaying color change on the immediate addition of analytes. Furthermore, the color change of Sdots is demonstrated with the help of hue images and hue spectra (or histogram) that will help in the development of Sdots based portable device. The present study contributes to the further advancement of this emerging field as a promising single-element nanomaterial an alternative to luminescent metallic nanomaterials.

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Section: Introductionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Luminescent Sulfur Quantum Dots for Colorimetric Discrimination of Multiple Metal Ions

Arshad

2020

ACS Appl. Nano Mater.

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“…For sensing metal ions, SQDs synthesized under different reaction conditions have presented sensitive and selective fluorescence detection properties for a variety of metal ions, such as Cr(VI) ( Duan et al, 2020 ; Zhang et al, 2020 ), Fe 3+ ( Huang et al, 2021a ; Lei et al, 2021 ), Co 2+ ( Wang S. et al, 2019 ), Hg 2+ ( Qiao et al, 2020 ), and Zn 2+ ions ( Zhao and Fan, 2020 ). For example, Zhou and co-workers found that the CMC-capped SQDs showed sensitive fluorescence quenching behavior toward Cr(VI) due to the existence of strong IFE.…”

Section: Biosensingmentioning

confidence: 99%

Synthesis of Fluorescent Sulfur Quantum Dots for Bioimaging and Biosensing

Hong

Zhou

2022

Front. Bioeng. Biotechnol.

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The rapid industrialization has had a serious impact on the environment, leading to an increase in disease and healthcare problems. The development of simple and effective biosensors to achieve specific analyte detection and bioimaging can provide useful information for disease prevention and treatment. Sulfur quantum dots (SQDs), a new class of metal-free fluorescent nanomaterial, are being studied and applied in diagnostic fields such as bioimaging and biosensing due to their advantages of simple synthetic process, unique composition, ultrasmall size, adjustable fluorescence, and low toxicity. This minireview highlights the main synthetic methods to synthesize fluorescent SQDs and their recent progress in cell and tissue imaging, as well as detection of biomolecules, metal ions, and temperature. Finally, the future development and some critical challenges of SQDs as a fluorescent probe in the field of bioimaging and biosensing are also discussed.

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“…Literature has demonstrated that sulfur quantum dots were applied in the field of sensor [ 81 , 85 , 124 ]. For example, sulfur quantum dots have been used for sensing metal ions or detecting drug [ 81 , 125 ]. Very recently, sulfur quantum dots also have gradually been applied to living cells imaging [ 124 ].…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Wang

Jiang

et al. 2020

Sensors

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In recent years, sulfur-containing nanomaterials and their derivatives/composites have attracted much attention because of their important role in the field of biosensor, biolabeling, drug delivery and diagnostic imaging technology, which inspires us to compile this review. To focus on the relationships between advanced biomaterials and biosensors, this review describes the applications of various types of sulfur-containing nanomaterials in biosensors. We bring two types of sulfur-containing nanomaterials including metallic sulfide nanomaterials and sulfur-containing quantum dots, to discuss and summarize the possibility and application as biosensors based on the sulfur-containing nanomaterials. Finally, future perspective and challenges of biosensors based on sulfur-containing nanomaterials are briefly rendered.

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Using zinc ion-enhanced fluorescence of sulfur quantum dots to improve the detection of the zinc(II)-binding antifungal drug clioquinol

Cited by 36 publications

References 34 publications

Luminescent Sulfur Quantum Dots for Colorimetric Discrimination of Multiple Metal Ions

Luminescent Sulfur Quantum Dots for Colorimetric Discrimination of Multiple Metal Ions

Synthesis of Fluorescent Sulfur Quantum Dots for Bioimaging and Biosensing

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

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