Multifunctional nitrogen-doped carbon dots from maleic anhydride and tetraethylenepentamine via pyrolysis for sensing, adsorbance, and imaging applications

Carbon Dots are an emerging class of carbon-based nanoparticles, which since their discovery have attracted tremendous attention because of their exceptional fluorescent, chemical and mechanical properties as well as high photostability and biocompatibility. This unique combination of outstanding characteristics, together with the ease with which they can be synthesized, qualify carbon dots as highly promising materials for applications in electronics and biology, in particular, for biosensing, bioimaging, biotherapy and drug delivery. In this review, we present some of the most recent applications of carbon dots in biology and medicine, concentrating on their fluorescence properties, biocompatibility and efficiency; we also discuss how improvements could prompt their use in human studies. We illustrate how carbon dots, prepared through several facile and costeffective methods by either the bottom-up or the top-down route, can be used for imaging cells and bacteria and as sensing probes of metal cations. Moreover, we explain how their astonishing versatility has given rise to new biotherapy methods especially in the field of cancer theranostics.

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“…Another interesting paper by Thongsai et al [85]. extends the biomedical applications of their CDs with a different technological approach.…”

Section: Multifunctional Sensingmentioning

confidence: 99%

Advances in fluorescent carbon dots for biomedical applications

Koutsogiannis

Thomou

Stamatis

et al. 2020

Advances in Physics: X

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“…[41] In 2017, Paoprasert and co-workers applied multifunctional non-toxic, eco-friendly, inexpensive N-doped CDs for FP detection. [42] The multifunctional Ndoped CDs were synthesized via simple and straightforward pyrolysis of maleic anhydride and tetraethylenepentamine.…”

Section: Hetero Atom Doped Cdsmentioning

confidence: 99%

Applications of Carbon Dots (CDs) in Latent Fingerprints Imaging

Shabashini

Panja

Nandi

2021

Chemistry An Asian Journal

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Carbon dots (CDs), a new member of the carbonbased material family, possess unique properties, such as high fluorescence, non-toxicity, eco-friendliness, stability and cost-effectiveness. These properties helped CDs to receive tremendous attention in various fields, namely, biological, opto-electronic, bio-imaging and energy-related applications.Although CDs are widely explored in bio-imaging and biosensing applications, their effectiveness in forensic science and technology is comparatively new. In this review, applications of CDs pertaining to latent FPs recovery since 2015 to 2020 is summarized comprehensively.

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“…We used this saturation concentration to calculate the maximum adsorption capacity of the carbon dots. The diameter of the carbon dots was approximately 4 nm, the Ni 2 + surface coverage of carbon dots was calculated to be 3.63 ions/nm 2 (calculation in supplementary information), [56] meaning that one carbon dot can adsorb and accommodate upto 182 Ni 2 + ions, equivalent to 234.8 mg g À 1 , which is the highest to date (Table 3). The high adsorption capacity is due to their small size, large surface area, and ability to strongly bind Ni 2 + through hydrophilic functional groups and heteroatoms.…”

Section: Ni 2 + Ion Detectionmentioning

confidence: 99%

Highly sensitive Ni²⁺ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity

et al. 2021

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In this work, the novel, simple Ni 2 + sensors with high sensitivity, selectivity, accuracy, practicality, and adsorption capacity were developed from the label-free carbon dots. The carbon dots were prepared from polyurethane through a onestep pyrolysis method. They exhibited excitation-independent photoluminescence and offered a fluorescence quantum yield of 24 %. They were then tested for metal ion sensing, showing selectivity towards Ni 2 + against a range of metal ions with a detection limit of 3.14 μM, the best for the carbon dots reported to date. A carbon dot-loaded paper-based sensor was also fabricated for Ni 2 + detection, showing a limit of detection of 43.3 μM. The detection of Ni 2 + in real water samples showed excellent recovery of 95.6 to 99.2 %. The selective detection of Ni 2 + by the carbon dots arose from the inner filter effect and complex formation, leading to fluorescence quenching of the carbon dots. X-ray absorption analysis further confirmed the unique interaction and electron transfer from the carbon dots to Ni 2 + . In addition to high-performance sensing, the carbon dots demonstrated high adsorbent capacity towards Ni 2 + , in which one nanoparticle could accommodate up to 182 Ni 2 + ions, equivalent to 234.8 mg g À 1 . This work demonstrates the unique sensing and adsorbent properties of polyurethanederived carbon dots towards Ni 2 + , which can be applied for simultaneous monitoring and cleaning.

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Multifunctional nitrogen-doped carbon dots from maleic anhydride and tetraethylenepentamine via pyrolysis for sensing, adsorbance, and imaging applications

Cited by 42 publications

References 71 publications

Advances in fluorescent carbon dots for biomedical applications

Advances in fluorescent carbon dots for biomedical applications

Applications of Carbon Dots (CDs) in Latent Fingerprints Imaging

Highly sensitive Ni²⁺ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity

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Multifunctional nitrogen-doped carbon dots from maleic anhydride and tetraethylenepentamine via pyrolysis for sensing, adsorbance, and imaging applications

Cited by 42 publications

References 71 publications

Advances in fluorescent carbon dots for biomedical applications

Advances in fluorescent carbon dots for biomedical applications

Applications of Carbon Dots (CDs) in Latent Fingerprints Imaging

Highly sensitive Ni2+ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity

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Product

Resources

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Highly sensitive Ni²⁺ sensors based on polyurethane‐derived, label‐free carbon dots with high adsorption capacity