Synthesis of green-emitting carbon quantum dots with double carbon sources and their application as a fluorescent probe for selective detection of Cu<sup>2+</sup> ions

Xu, Jun; Li, Huizhi; Zhao, Weilin

doi:10.1039/c9ra08654d

Cited by 56 publications

(18 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although FB 1 has an effect on the catalytic effect of DTSA CDs, it cannot be said that only FB 1 has an effect on it, and it has been reported that some metal ions 27 and organic matter 28 also have an effect on CDs. Therefore, F10 needs to be added to ensure specificity.…”

Section: Resultsmentioning

confidence: 99%

Establishment of fumonisin B₁ detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Establishment of fumonisin B₁ detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Thus, the low cost, biocompatibilty, and distinct PL properties proves these C-dots could potentially be produced on an industrial scale as a new fluorescent ink for versatile applications [49]. Xu et al used tartaric acid and bran as starting precursors to synthesize green light-emitting CDs [50]. The one-pot solvothermal process produces CDs with 46% PLQY.…”

Section: Introductionmentioning

confidence: 99%

Ultra-bright green carbon dots with excitation-independent fluorescence for bioimaging

Singh

Sharma

et al. 2022

J Nanostruct Chem

View full text Add to dashboard Cite

Current and future diagnostics urgently need imaging agents that are non-toxic and superior to clinically used small molecule dyes. Herein, we have developed luminescent green light-emitting carbon dots (GCDs) via a single-step hydrothermal reaction using a low-cost chemical precursor, p-toluenesulfonic acid. The GCDs exhibit excitation-independent fluorescence (FL) emission with the photoluminescence quantum yield of 70% and no FL quenching up to 1.25 mg/mL. The GCDs exhibit negligible cytotoxicity up to 250 µg/mL concentration in RAW 264.7 cells. Interestingly, GCDs exhibit an excitation-independent and concentration-dependent fluorescence emission behaviour. In vitro, the peak emission was obtained at 520 nm using the excitation at 430 nm. Whereas FL intensity increased with increasing concentration up to 1.25 mg/mL and a sharp decrease in FL intensity is observed upon further increasing the concentration of GCDs. Upon subcutaneously injecting the GCDs into a euthanized mouse, a similar concentration-dependent FL behaviour is evident. Background autofluorescence hinders the use of the GCDs at 420 nm excitation, however, a strong FL emission at 520 nm can be obtained by exciting subcutaneously injected GCDs at 465 nm—demonstrating excitation-independent emission characteristics. The above results indicate the potential of the non-toxic, low-cost carbon dots for diverse bioimaging applications. Graphical abstract Ultra-bright green-emitting carbon dots (GCDs) with photoluminescence quantum yield of 70% were synthesized using p-toluenesulfonic acid and ethylenediamine as precursors. The GCDs were subcutaneously injected into fresh mouse cadaver for fluorescence (FL)bioimaging, showing dose-dependent FL intensity behaviour.

show abstract

“…Carbon dots can be made in a variety of ways, including hydrothermal, [10][11][12][13][14] solvothermal, [15][16][17] electrochemical, [18][19][20] arc discharge, laser ablation, 2,21 pyrolysis, and others. [22][23][24][25] However, to improve water solubility and fluorescence, 2 these synthetic approaches require multiple stages, including pricey precursors, post-preparative treatment, and a surface passivating agent. One-step self-passivated carbon dot preparations have recently piqued interest, however they are time-consuming, expensive, and need a high temperature, as well as a poor quantum yield (QY) and limited solubility.…”

Section: Introductionmentioning

confidence: 99%

Carbon Dot - An Updated Review

Mukherjee¹,

Chakraborty

et al. 2022

IJPI

View full text Add to dashboard Cite

These days, carbon dots (CDs) are the rising stars of nanomaterials. Carbon dots (CDs) are small carbon nanoparticles with the same type of surface passivation (less than 10 nm in size). Researchers found C-dots by accident while purifying single-walled carbon nanotubes (SWCNTs) manufactured using the arc-discharge process. Toxic metal-based quantum dots are being replaced with carbon dots (QDs). Carbon dots are currently being prepared from a variety of natural resources in order to obtain self-passivated products at a reasonable cost. Because of their superior photo physical characteristics, biocompatibility, and low toxicity, carbon dots have prospective applications in bio sensing, bio imaging, and drug administration. Different synthetic processes, precursors, salient properties, and applications were reviewed in this review, as well as some future prospects, obstacles, and possible solutions for future development. Because of their tunable optical characteristics and better biocompatibility, luminous carbon-based nanomaterials have sparked a lot of scientific interest. Different light emission properties of carbon are discussed in this review. Distinct synthesis procedures have resulted in different carbon dots (CDs). Summarized here. The optical properties of CDs that haven't been synthesized yet surface doping and element doping can be used to further control it. CDs are being functionalized for an adjustable band gap. As a result of their luminescent with reduced cytotoxicity and tunable optical characteristics CDs have been thoroughly investigated in terms of their potential uses in biomedicine, such as analytical sensors, and instruments for bioimaging. Fluorescent carbon dots are a new type of nanomaterial from the carbon family. Green CDs, which have attracted a lot of attention from researchers because of their better water solubility, high biocompatibility, and eco-friendly nature when compared to chemically generated CDs, can be made from a variety of inexpensive and renewable resources. The presence of heteroatoms on the surface of green CDs in the form of amine, hydroxyl, carboxyl, or thiol functional groups, which can improve their physicochemical qualities, quantum yield, and likelihood of visible light absorption, eliminates the need for additional surface passivation.

show abstract

Synthesis of green-emitting carbon quantum dots with double carbon sources and their application as a fluorescent probe for selective detection of Cu²⁺ ions

Abstract: Green-emitting carbon quantum dots (G-CQDs) were prepared using tartaric acid and bran by one-pot solvothermal treatment and had photoluminescence quantum yields (PL QY) as high as 46%.

Cited by 56 publications

References 46 publications

Establishment of fumonisin B₁ detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

Establishment of fumonisin B₁ detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

Ultra-bright green carbon dots with excitation-independent fluorescence for bioimaging

Carbon Dot - An Updated Review

Contact Info

Product

Resources

About

Synthesis of green-emitting carbon quantum dots with double carbon sources and their application as a fluorescent probe for selective detection of Cu2+ ions

Abstract: Green-emitting carbon quantum dots (G-CQDs) were prepared using tartaric acid and bran by one-pot solvothermal treatment and had photoluminescence quantum yields (PL QY) as high as 46%.

Cited by 56 publications

References 46 publications

Establishment of fumonisin B1 detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

Establishment of fumonisin B1 detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

Ultra-bright green carbon dots with excitation-independent fluorescence for bioimaging

Carbon Dot - An Updated Review

Contact Info

Product

Resources

About

Synthesis of green-emitting carbon quantum dots with double carbon sources and their application as a fluorescent probe for selective detection of Cu²⁺ ions

Establishment of fumonisin B₁ detection method for catalytic fluorescence detection of aptamer-regulated carbon dots

Establishment of fumonisin B₁ detection method for catalytic fluorescence detection of aptamer-regulated carbon dots