Lateral size homogeneous and doping degree controllable potassium-doped graphene quantum dots by mechanochemical reaction

Huang, Libin; Xie, Chaoran; Wu, Zixia; Ji, Man; Jia, Shaofeng; Cheng, Pei Feng; Liu, Jianming; Chen, Luya; Zhou, Benqing; Sun, Wenjie

doi:10.1016/j.cej.2022.135800

Cited by 5 publications

(8 citation statements)

References 49 publications

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“…43 In Figure S1c, K 2p spectra exhibited two peaks at 291.5 and 294 eV with a signature of K 2p 3/2 and a C−K bond. 44 However, the binding energy of 294 eV is also assigned to the carboxyl group (O�C−O), which supports the hydrophilicity of the PW-CDs. 33 Figure S1d demonstrates the N 1s spectra, the peak at 398.6 eV allocated to C−N−C/C�N bonds.…”

Section: Characterization Of Pw-cds 311 Structuralmentioning

confidence: 78%

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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Section: Characterization Of Pw-cds 311 Structuralmentioning

confidence: 78%

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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“…Single-element doping or multipleelement co-doping of CDs have been investigated with a range of synthetic precursors and procedures using a variety of elemental dopants, such as nitrogen (N), [336] sulfur (F), [337] chlorine (Cl), [338,339] fluorine (Fl), [340] copper (Cu), [341] and potassium (K) (Table 4). [342] The overall strategy to dope heteroatom elements into the graphitic structure of CDs consists of two conventional methods: (i) in-situ doping, which is accomplished through directly introducing heteroatom-containing precursors during the synthesis of CDs, and (ii) post-treatment doping, which involves mixing the heteroatom-containing precursors with pre-synthesized CDs. [295] The in-situ doping follows the general process of either top-down or bottom-up techniques, which were systematically reviewed in previous sections; however, the reaction mixture is often accompanied by two or more precursors that contain both carbon and dopant atoms in their chemical structure.…”

Section: Surface Passivation and Doping Of Carbon Dotsmentioning

confidence: 99%

“…Single‐element doping or multiple‐element co‐doping of CDs have been investigated with a range of synthetic precursors and procedures using a variety of elemental dopants, such as nitrogen (N), [ 336 ] sulfur (F), [ 337 ] chlorine (Cl), [ 338,339 ] fluorine (Fl), [ 340 ] copper (Cu), [ 341 ] and potassium (K) (Table 4). [ 342 ]…”

Section: Surface Engineering and Passivation Strategiesmentioning

confidence: 99%

Fluorescent Nanocarbons: From Synthesis and Structure to Cancer Imaging and Therapy

Ghasemlou,

PN,

Alexander

et al. 2024

Advanced Materials

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Nanocarbons are emerging at the forefront of nanoscience, with diverse carbon nanoforms emerging over the last two decades. Early cancer diagnosis and therapy, driven by advanced chemistry techniques, play a pivotal role in mitigating mortality rates associated with cancer. Nanocarbons, with an attractive combination of well‐defined architectures, biocompatibility, and nanoscale dimension, offer an incredibly versatile platform for cancer imaging and therapy. This paper aims to review the underlying principles regarding the controllable synthesis, fluorescence origins, cellular toxicity, and surface functionalization routes of several classes of nanocarbons: carbon nanodots, nanodiamonds, carbon nanoonions, and carbon nanohorns. This review also highlights recent breakthroughs regarding the green synthesis of different nanocarbons from renewable sources. It also presents a comprehensive and unified overview of the latest cancer‐related applications of nanocarbons and how they could be designed to interface with biological systems and work as cancer diagnostics and therapeutic tools. The commercial status for large‐scale manufacturing of nanocarbons is also presented. Finally, it proposes future research opportunities aimed at engendering modifiable and high‐performance nanocarbons for emerging applications across medical industries. This work is envisioned as a cornerstone to guide interdisciplinary teams in crafting fluorescent nanocarbons with tailored attributes that can revolutionize cancer diagnostics and therapy.This article is protected by copyright. All rights reserved

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“…Similarly, Huang et al. presented potassium doped CDs (K‐CDs) with desirable cytocompatibility via the ball‐milling method for bioimaging [78] . Multi‐walled carbon nanotubes (MWCNTs) and KOH were employed as precursors.…”

Section: M‐cds For Versatile Bio‐applicationsmentioning

confidence: 99%

Emerging and Versatile Platforms of Metal‐Ion‐Doped Carbon Dots for Biosensing, Bioimaging, and Disease Therapy

Qian

et al. 2022

ChemMedChem

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Metal ions possess abundant electrons and unoccupied orbitals, as well as large atomic radii, whose doping into carbon dots (CDs) is a facile strategy to endow CDs with additional physicochemical characteristics. After being doped with metal ions, CDs reveal obvious changes in their optical, electronic, and magnetic properties by adjustments to their electron density distribution and the energy gaps, leading them to be promising and competitive candidates as labeling probes, imaging agents, catalysts, nanodrugs, and so on. In this review, we summarize the fabrication methods of metal‐ion‐doped CDs (M‐CDs), and highlight their biological applications including biosensing, bioimaging, tumor therapy, and anti‐microbial treatment. Finally, the challenging future perspectives of M‐CDs are analyzed. We hope this review will provide inspiration for further development of M‐CDs in various biological aspects, and help readers who are interested in M‐CDs and their biological applications.

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Lateral size homogeneous and doping degree controllable potassium-doped graphene quantum dots by mechanochemical reaction

Cited by 5 publications

References 49 publications

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

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

Fluorescent Nanocarbons: From Synthesis and Structure to Cancer Imaging and Therapy

Emerging and Versatile Platforms of Metal‐Ion‐Doped Carbon Dots for Biosensing, Bioimaging, and Disease Therapy

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