Green synthesis of carbon dots from rose-heart radish and application for Fe3+ detection and cell imaging

Liu, Wen; Diao, Hongwei; Chang, Honghong; Wang, Haojiang; Li, Tingting; Wei, Wenlong

doi:10.1016/j.snb.2016.10.068

Cited by 466 publications

(172 citation statements)

References 44 publications

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“…[1][2][3] For instance, they have remarkable optical properties, good water dispersibility,e nvironmental friendliness,a nd are available from aw ide range of raw materials. [4][5][6] Owing to these excellent properties, CQDs are widely used in medical imaging technology, [7,8] environmentalm onitoring, [9,10] chemical analysis, [11] catalystp reparation, [12,13] and energy development fields. [14,15] At present, there are two main classical routest oo btain CQDs.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

et al. 2019

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Sustainable, inexpensive, and environmentally friendly biomass waste can be exploited for large‐scale production of carbon nanomaterials. Here, alkali lignin was employed as a precursor to synthesize carbon quantum dots (CQDs) with bright green fluorescence through a simple one‐pot route. The prepared CQDs had a size of 1.5–3.5 nm, were water‐dispersible, and showed wonderful biocompatibility, in addition to their excellent photoluminescence and electrocatalysis properties. These high‐quality CQDs could be used in a wide range of applications such as metal‐ion detection, cell imaging, and electrocatalysis. The wide range of biomass lignin feedstocks provide a green, low‐cost, and viable strategy for producing high‐quality fluorescent CQDs and enable the conversion of biomass waste into high‐value products that promote sustainable development of the economy and human society.

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Section: Introductionmentioning

confidence: 99%

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

et al. 2019

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“…Therefore, this method is a relatively common and simple way to prepare CQDs. The carbon source used for this process can be wide ranging such as fruit or fruit juice, vegetables, biomass raw materials, organic acids, etc., and the reaction solvent may be water or an organic solvent …”

Section: Introductionmentioning

confidence: 99%

“…These CQDs were used as biomarkers and in bioimaging. Liu and colleagues synthesized CQDs from ascorbic acid and ethylene glycol using a one‐step solvothermal method that had good biocompatibility and low toxicity. These N‐CQDs could be used as probes for cell marking.…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of solvent‐modulated self‐doped N–S multicolour fluorescence carbon quantum dots

Zhao

2019

Luminescence

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In this paper, two types of carbon quantum dot (CQDs) were prepared using biocompatible L-methionine as the carbon source and urea as the nitrogen source and a onestep hydrothermal treatment. By changing the reaction solvents (deionized (DI) water and dimethylformamide (DMF)), the maximum emission of the resulting CQDs shifted from blue to red light. Specifically, the emission wavelength of the CQDs moved from 433 nm to 625 nm following embedding of a new functional group (-CONH-) on the surface of the CQDs. Photoluminescence quantum yields of the CQDs with blue and red emission reached 64% and 61%, respectively. The R-CQDs were used to detect metal ions and a linear relationship was demonstrated between ln(F/F 0 ) and Fe 3+ concentration in the range 0-0.5 mmol/L with a detection limit of 0.067 μM. Therefore these R-CQDs have great potential as fluorescent probes for Fe 3+ detection. We expect that the excellent water-soluble, biocompatible and optical properties of the CQDs developed in this work mean that they will be widely used to detect biological cells.KEYWORDS amino acids, carbon quantum dots, fluorescent properties, metal ion detection

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“…Carbon dots (CDs), as newly emerging carbon based nanomaterials with particle size less than 10 nm, have gained tremendous attention due to their high performances, such as bright fluorescence, excellent photostability, tunable fluorescence emission, favorable biocompatibility, low toxicity and good water solubility compared to the traditional heavy metal based quantum dots and organic dyes. Therefore, CDs have high application potentials in wide areas, such as sensing, bioimaging, nanocarriers and photo‐electronic devices .…”

Section: Introductionmentioning

confidence: 99%

Detection of metronidazole in honey and metronidazole tablets using carbon dots‐based sensor via the inner filter effect

et al. 2018

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In this work, carbon dots (CDs) with a high quantum yield (22.3%) were easily prepared by hydrothermal pyrolysis of acid fuchsin 6B and hydrogen peroxide at 180°C for 10 h. The resultant CDs possess a narrow size distribution in the range of 2.6 to 3.2 nm and emit blue fluorescence. Interestingly, the absorption band of metronidazole (MTZ) centered at 318 nm can complementary overlap with the excitation band of the as-prepared CDs centered at 320 nm, resulting in an inner filter effect (IFE) in high efficiency. In fact, the fluorescence quenching of the CDs depends on the concentration of MTZ. Therefore, a simple method for the detection of MTZ can be established using the CDs-based sensor via the IFE. The linear range of the proposed method was 0-10 μg mL with the limit of detection as low as 0.257 μg mL . This CDs-based sensor had been applied for the detection of MTZ in honey and MTZ tablets with the recoveries in the range of 98.0% to 105.1% and 95.7% to 106.5%, respectively. Therefore, the as-prepared CDs have a potential to be developed as a MTZ sensor with high selectivity, sensitivity and accuracy.

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Green synthesis of carbon dots from rose-heart radish and application for Fe3+ detection and cell imaging

Cited by 466 publications

References 44 publications

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

Preparation and application of solvent‐modulated self‐doped N–S multicolour fluorescence carbon quantum dots

Detection of metronidazole in honey and metronidazole tablets using carbon dots‐based sensor via the inner filter effect

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