Highly photoluminescent and temperature-sensitive P, N, B-co-doped carbon quantum dots and their highly sensitive recognition for curcumin

Wu, Bin; Liu, Xiaolong; Shi, Xin; Han, Wei; Wang, Chunru; Li, Jiang

doi:10.1039/c9ra00183b

Cited by 36 publications

(26 citation statements)

References 61 publications

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“…Fig. 3 A depicted the UV–vis absorption of NCDs (blank line), an obvious and characteristic absorption peak at 287 nm was observed, which was ascribed to the typical absorption of π-π* transition of C=C [ 28 , 32 ]. There was also a weak absorption band from 300 nm to 400 nm which might be attributed to the n-π* transition of C=O bond [ 36 , 37 , 39 , 40 ].…”

Section: Resultsmentioning

confidence: 99%

“…So, the E HOMO of NCDs was estimated to be −7.39 eV. The E HOMO and E LUMO of curcumin were −5.75 eV and −2.22 eV respectively according to the literature [ 32 ]. It can be seen from Fig.…”

Section: Resultsmentioning

confidence: 99%

“…At present, a variety of functionalized carbon dots have been explored to determine curcumin. Wu et al [ 32 ] synthesize P, N, B co-doped carbon quantum dots using a hydrothermal method, which exhibited extraordinary sensitivity to curcumin with the detection limit of 68 nmol L −1 . However, 4-amino-phenylboronic acid as the Boron dopant is toxic to some extent because it contains a benzene ring, which is not environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…The sensor was successfully used on human urine samples with a 40 nM LOD and satisfactory recovery. In a very similar way, and with similar results, P,N,B-co-doped quantum dots were also used to detect curcumin [ 129 ].…”

Section: Optical and Fluorimetric Sensorsmentioning

confidence: 99%

Biosensors and Sensing Systems for Rapid Analysis of Phenolic Compounds from Plants: A Comprehensive Review

2020

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Phenolic compounds are secondary metabolites frequently found in plants that exhibit many different effects on human health. Because of the relevant bioactivity, their identification and quantification in agro-food matrices as well as in biological samples are a fundamental issue in the field of quality control of food and food supplements, and clinical analysis. In this review, a critical selection of sensors and biosensors for rapid and selective detection of phenolic compounds is discussed. Sensors based on electrochemistry, photoelectrochemistry, fluorescence, and colorimetry are discussed including devices with or without specific recognition elements, such as biomolecules, enzymes and molecularly imprinted materials. Systems that have been tested on real matrices are prevalently considered but also techniques that show potential development in the field.

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“…Furthermore, curcumin was efficiently detected in urine samples via N and S co-doped CQDs. In another investigation, Wu et al prepared B, N, and P co-doped CQDs with QY of 21.95% (via hydrothermal reaction (10 h at 180 • C)of ethylenediamine, H 3 PO 4 and 4-amino-phenylboronic acid), that have possessed remarkable selectivity and sensitivity towards curcumin with the linear range of 0-1.5 mmol/L and LOD of 68 nmol/L [181].…”

Section: Curcuminmentioning

confidence: 99%

Recent Advancements in Doped/Co-Doped Carbon Quantum Dots for Multi-Potential Applications

Kandasamy

2019

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Carbon quantum dots (CQDs)/carbon nanodots are a new class of fluorescent carbon nanomaterials having an approximate size in the range of 2–10 nm. The majority of the reported review articles have discussed about the development of the CQDs (via simple and cost-effective synthesis methods) for use in bio-imaging and chemical-/biological-sensing applications. However, there is a severe lack of consolidated studies on the recently developed CQDs (especially doped/co-doped) that are utilized in different areas of application. Hence, in this review, we have extensively discussed about the recent development in doped and co-doped CQDs (using elements/heteroatoms—e.g., boron (B), fluorine (F), nitrogen (N), sulphur (S), and phosphorous (P)), along with their synthesis method, reaction conditions, and/or quantum yield (QY), and their emerging multi-potential applications including electrical/electronics (such as light emitting diode (LED) and solar cells), fluorescent ink for anti-counterfeiting, optical sensors (for detection of metal ions, drugs, and pesticides/fungicides), gene delivery, and temperature probing.

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Highly photoluminescent and temperature-sensitive P, N, B-co-doped carbon quantum dots and their highly sensitive recognition for curcumin

Abstract: Temperature-sensitive P, N, B-co-doped carbon quantum dots (PNBCDs) synthesized using one-pot method exhibit many excellent features, such as strong fluorescence, good stability and sensitive detection for curcumin.

Cited by 36 publications

References 61 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

Biosensors and Sensing Systems for Rapid Analysis of Phenolic Compounds from Plants: A Comprehensive Review

Recent Advancements in Doped/Co-Doped Carbon Quantum Dots for Multi-Potential Applications

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