One-step green synthesis of carbon dots derived from<i>Plumeria alba</i>flowers for sensing and bioimaging

He, Ye; Chen, Xiaojing; Wang, Panlin; Li, Xiao; Wang, Bingbing; Wu, Zhuzheng; Wang, Wenxiang

doi:10.1039/d3nj00359k

Cited by 6 publications

(5 citation statements)

References 46 publications

(46 reference statements)

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“…Temperature affects the degree of carbonation, and it is difficult to form a graphite core at low temperatures. On the contrary, higher reaction temperatures completely carbonize the functional groups on the surface of the carbon nucleus and affect its QY . Also, hydrothermal processes have the benefit that they can optimize safety and minimize toxicity by achieving the great water dispersibility of CDs without additional passivation.…”

Section: Preparation and Characterization Of Tcms-cdsmentioning

confidence: 99%

“…TCMs are transformed into CDs with particle size less than 10 nm through physical and chemical treatments, and this also gives TCMs-CDs extensive and wide biological activities. − ,− TCMs contain a variety of components and rich elements. Using TCMs as precursors, it does not need any chemical reagents and has the characteristics of economic benefits, easy access, large amount, and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Dots Derived from Traditional Chinese Medicines with Bioactivities: A Rising Star in Clinical Treatment

Zhang,

Zou,

et al. 2023

ACS Appl. Bio Mater.

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In the field of carbon nanomaterials, carbon dots (CDs) have become a preferable choice in biomedical applications. Based on the concept of green chemistry, CDs derived from traditional Chinese medicines (TCMs) have attracted extensive attention, including TCM charcoal drugs, TCM extracts, and TCM small molecules. The design and preparation of CDs from TCMs (TCMs-CDs) can improve the inherent characteristics of TCMs, such as solubility, particle size distribution, and so on. Compared with other precursor materials, TCMs-CDs have outstanding intrinsic bioactivities and potential pharmacological effects. However, the research of TCMs-CDs in biomedicine is not comprehensive, and their mechanisms have not been understood deeply either. In this review, we will provide concise insights into the recent development of TCMs-CDs, with a major focus on their preparation, formation, precursors, and bioactivities. Then we will discuss the perfect transformation from TCMs to TCMs-CDs. Finally, we discuss the opportunities and challenges for the application of TCMs-CDs in clinical treatment.

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Section: Preparation and Characterization Of Tcms-cdsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Dots Derived from Traditional Chinese Medicines with Bioactivities: A Rising Star in Clinical Treatment

Zhang,

Zou,

et al. 2023

ACS Appl. Bio Mater.

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“…The hydrothermal method is preferred because of its low cost, minimal environmental impact, and ease of use. 13 Besides the synthesis route, the carbon precursor is crucial. Environmental concerns have shifted CD synthesis from chemicals to greener methods.…”

Section: Introductionmentioning

confidence: 99%

“…The use of strong acids limits the chemical oxidation process. The hydrothermal method is preferred because of its low cost, minimal environmental impact, and ease of use . Besides the synthesis route, the carbon precursor is crucial.…”

Section: Introductionmentioning

confidence: 99%

“…Natural carbon sources are important for green synthesis because they are simple, abundant, readily available, nontoxic, eco-friendly, and cost-effective. Thus far, many natural green sources, such as prawn shells, Plumeria alba flower, tuberose petals, pine cones, Ganoderma lucidum bran, human fingernails, banana juice, Andrographis paniculata, avocado seeds, Acacia concinna seeds, lily bulbs, and Eleusine coracana, have been reported to synthesize CDs. Studies reveal that most bare green synthesized CDs have a quantum yield (QY) of <10%.…”

Section: Introductionmentioning

confidence: 99%

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Smartphone-Assisted and Optical Quantification of Copper and Glucose Using Palm Wine-Tailored Carbon Dots and Their Multiple Logic Gate Application

Mandal,

Sappati,

Karmakar

et al. 2024

ACS Biomater. Sci. Eng.

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In this work, potassium, sulfur, nitrogen, and chlorine self-doped carbon dots (CDs) were hydrothermally synthesized using palm wine as a carbon source. The palm wine-derived CDs (PW-CDs) are amorphous in nature and displayed an average particle size of 4.19 ± 0.89 nm. The as-synthesized CDs are used to fabricate a photoluminescent sensing probe to simultaneously detect Cu 2+ and glucose via the "Turn ON−OFF−ON" mechanism. The PL quenching mechanism of PW-CDs enables the selective and sensitive detection of Cu 2+ ions with a detection limit (LOD) of 0.8 ppb (4.7 nM). The sensing probe quantified Cu 2+ in tap water, drinking water, and e-waste samples to prove its viability. Using CDs to quantify copper in e-waste leachate samples is a novel approach as no prior instances of such application have been reported. The system's performance is considered to be highly reproducible due to the relative standard deviation being <6.64%, along with excellent recoveries within the range of 93.24−109.86%. The quenched PL can be recovered by introducing glucose into the PW-CD + Cu 2+ system; this strategy is employed to quantify glucose with a LOD of 0.11 ppm (0.61 μM). The feasibility of this sensor was confirmed by the determination of glucose in actual human plasma specimens of diabetic patients. It is to be noted that these samples were neither diluted nor spiked with glucose. The developed PW-CD + Cu 2+ sensing system yields satisfactory recoveries of 93.45−107.37%. This probe was also incorporated into a smartphone-based sensing platform to detect Cu 2+ and glucose with desirable recoveries. The proposed smartphone-based sensing platform is flexible, reliable, and accurate, making it suitable for resource-constrained areas. Furthermore, based on the effect of Cu 2+ ions and glucose on the PL response and absorbance spectra of PW-CDs, four logic gates (YES, IMPLICATION, NOT, and OR) were designed, and PW-CDs were also used for cell imaging applications.

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Carbon Dots: A Review with Focus on Sustainability

Ren,

Opoku,

Tang

et al. 2024

Advanced Science

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Carbon dots (CDs) are an emerging class of nanomaterials with attractive optical properties, which promise to enable a variety of applications. An important and timely question is whether CDs can become a functional and sustainable alternative to incumbent optical nanomaterials, notably inorganic quantum dots. Herein, the current CD literature is comprehensively reviewed as regards to their synthesis and function, with a focus on sustainability aspects. The study quantifies why it is attractive that CDs can be synthesized with biomass as the sole starting material and be free from toxic and precious metals and critical raw materials. It further describes and analyzes employed pretreatment, chemical‐conversion, purification, and processing procedures, and highlights current issues with the usage of solvents, the energy and material efficiency, and the safety and waste management. It is specially shown that many reported synthesis and processing methods are concerningly wasteful with the utilization of non‐sustainable solvents and energy. It is finally recommended that future studies should explicitly consider and discuss the environmental influence of the selected starting material, solvents, and generated byproducts, and that quantitative information on the required amounts of solvents, consumables, and energy should be provided to enable an evaluation of the presented methods in an upscaled sustainability context.

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One-step green synthesis of carbon dots derived fromPlumeria albaflowers for sensing and bioimaging

Abstract: Green luminescent carbon dots prepared from Plumeria alba flowers have promise for applications in the fields of sensing and bioimaging.

Cited by 6 publications

References 46 publications

Carbon Dots Derived from Traditional Chinese Medicines with Bioactivities: A Rising Star in Clinical Treatment

Carbon Dots Derived from Traditional Chinese Medicines with Bioactivities: A Rising Star in Clinical Treatment

Smartphone-Assisted and Optical Quantification of Copper and Glucose Using Palm Wine-Tailored Carbon Dots and Their Multiple Logic Gate Application

Carbon Dots: A Review with Focus on Sustainability

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