High production-yield solid-state carbon dots with tunable photoluminescence for white/multi-color light-emitting diodes

Song, Haoqiang; Liu, Xuejian; Wang, Boyang; Tang, Zhiyong; Lu, Siyu

doi:10.1016/j.scib.2019.10.006

Cited by 158 publications

(100 citation statements)

References 46 publications

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“…As a novel type of zero-dimensional carbon nanomaterial, carbon dots (CDs) not only present tunable optical properties but also exhibit outstanding characteristics including photostability, biocompatibility, low toxicity, easy functionalization, and superior water solubility comparing with traditional organic dyes and semiconductor quantum dots [ 21 ]. Because of the excellent optical properties, CDs have shown enormous application prospects in photocatalysis, chemical and biological sensing, bioimaging, photodynamic therapy, and drug delivery [ [19] , [20] , [21] , [22] , [23] , [24] ]. Nitrogen-doping is one of the most effective strategies to improve the luminescence properties of CDs.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-doped fluorescence carbon dots as multi-mechanism detection for iodide and curcumin in biological and food samples

Tang

Bui

et al. 2021

Bioactive Materials

170

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Iodine ion is one of the most indispensable anions in living organisms, particularly being an important substance for the synthesis of thyroid hormones. Curcumin is a yellow-orange polyphenol compound derived from the rhizome of Curcuma longa L. , which has been commonly used as a spice and natural coloring agent, food additives, cosmetics as well as Chinese medicine. However, excess curcumin may cause DNA inactivation, lead to a decrease in intracellular ATP levels, and trigger the tissue necrosis. Therefore, quantitative detection of iodine and curcumin is of great significance in the fields of food and life sciences. Herein, we develop nitrogen-doped fluorescent carbon dots (NCDs) as a multi-mechanism detection for iodide and curcumin in actual complex biological and food samples, which was prepared by a one-step solid-phase synthesis using tartaric acid and urea as precursors without adding any other reagents. An assembled NCDs-Hg 2+ fluorescence-enhanced sensor for the quantitative detection of I − was established based on a fluorescence “turn-off-on” mechanism in a linear range of 0.3–15 μM with a detection limit of 69.4 nM and successfully quantified trace amounts of I − in water samples and urine sample. Meanwhile, the as-synthesized NCDs also can be used as a fluorescent quenched sensor for curcumin detection based on the synergistic internal filtration effect (IFE) and static quenching, achieving a good linear range of 0.1–20 μM with a satisfactory detection limit of 29.8 nM. These results indicate that carbon dots are potential sensing materials for iodine and curcumin detection for the good of our health.

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Section: Introductionmentioning

confidence: 99%

Nitrogen-doped fluorescence carbon dots as multi-mechanism detection for iodide and curcumin in biological and food samples

Tang

Bui

et al. 2021

Bioactive Materials

170

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Section: Recent Progress On Cdots Gqds and Related Composite Materimentioning

confidence: 99%

“…After 10 h of continuous work, the white light LED devices could still maintain 90% of the luminous intensity, exhibiting high stability. [58] Wang et al prepared a carbonized polymer dot with dual emission of blue fluorescence and yellow-green phosphorescence, with a total PLQY of up to 41% (Figure 4a,b). [59] Recently, Wu et al prepared white light-emitting graphene QDs with a high PLQY of 34% using 1,5-diaminonaphthalene (DAN) as the precursor, trichloromethane (TCM) as the Cl source, and ethanol as the solvent, by a solvothermal molecular fusion method.…”

Section: Single-component White Light-emitting Materials Based On Cdomentioning

confidence: 99%

Rare Earth‐Free Luminescent Materials for WLEDs: Recent Progress and Perspectives

Zhang

Pan

et al. 2020

Adv Materials Technologies

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The development and application of white light‐emitting diode (WLED) lighting technology are of great significance for reducing energy consumption. Commonly used WLED devices rely on the use of rare earth luminescent materials. However, rare earth elements are nonrenewable resources, and mining and refining processes have an adverse impact on the environment. In recent years, new white light‐emitting luminescent materials that do not contain rare earth elements have been developed, such as quantum dots, fluorescent carbon dots, perovskite luminescent materials, organic luminescent materials, and metal–organic framework materials, among others, some of which are successfully applied in the development of WLEDs. Herein the latest progress in this research field is reviewed, analyzing the construction of practical WLED devices and comparing the characteristics of newly developed rare earth‐free luminescent materials. Last, the future development prospects in this field are described.

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“…By changing the amount of nitric acid to regulate COOH content on the surface of CD, Song et al 73 and also by the increase in nitrogen doping content.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

Solid-state fluorescent carbon dots: quenching resistance strategies, high quantum efficiency control, multicolor tuning, and applications

2020

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High production-yield solid-state carbon dots with tunable photoluminescence for white/multi-color light-emitting diodes

Cited by 158 publications

References 46 publications

Nitrogen-doped fluorescence carbon dots as multi-mechanism detection for iodide and curcumin in biological and food samples

Nitrogen-doped fluorescence carbon dots as multi-mechanism detection for iodide and curcumin in biological and food samples

Rare Earth‐Free Luminescent Materials for WLEDs: Recent Progress and Perspectives

Solid-state fluorescent carbon dots: quenching resistance strategies, high quantum efficiency control, multicolor tuning, and applications

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