Facile synthesis of nitrogen and sulfur co-doped carbon dots and application for Fe(III) ions detection and cell imaging

Chen, Yanfen; Wu, Yuanya; Weng, Bo; Wang, Bin; Li, Chang Ming

doi:10.1016/j.snb.2015.09.081

Cited by 207 publications

(86 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although a negligible interference from Fe(II) to the CDs in sensing Fe(III) was observed, the efficiency of Fe(III) sensing greatly relied on the pH of the sample solution. 24 The prepared CDs in our study showed more specic recognition of Fe(III) from Fe(II) and responded well to Fe(III) in a wide range of pH (4.5 to 9.0), indicating the satisfactory tolerance of this sensing system. The discrimination effect for Fe(III) ions might originate from the exceptional coordination between Fe(III) ions and hydroxyl groups of CDs.…”

Section: 44-47supporting

confidence: 53%

“…23,25 Even if such sensor could be constructed with acceptable discrimination of Fe(III) and Fe(II), few could respond well to Fe(III) over a wide range of pH values. 24 In this research, we prepared the CDs through a simple onepot hydrothermal method from used black tea, and the CDs can be efficiently quenched by Fe(III). The prepared CDs not only respond well to Fe(III) in a buffer over a range of pH from 4.5 to 9.0, but also sensitively respond to Fe(III) in water with negligible interference from Fe(II).…”

Section: -30mentioning

confidence: 99%

See 1 more Smart Citation

A multianalyte fluorescent carbon dots sensing system constructed based on specific recognition of Fe(iii) ions

et al. 2017

View full text Add to dashboard Cite

In this research, we developed a multianalyte fluorescence sensing system through a carbon dots (CDs)-based fluorescent probe that can specifically recognize Fe(III) by fluorescence quenching. The CDs prepared using black tea by a hydrothermal method show outstanding properties like low cytotoxicity, high photostability, excellent biocompatibility, and high sensitivity. It was found that the fluorescence of CDs can be quenched by micromolar concentrations of Fe(III) in both aqueous solutions as well as living cells. It is well known that glucose can be oxidized by glucose oxidase (GOx) to release H 2 O 2 , which, in turn, can oxidize Fe(II) to Fe(III). Based on this consideration, a multianalyte sensing system was established. Therefore the quantitative analysis of Fe(III), H 2 O 2 , and glucose with detection limits of 0.25 mM, 0.82 mM, and 1.71 mM, respectively, was achieved by the simple and cost-effective multianalyte CDs sensing system constructed. The sensing system showed high photostability and negligible cytotoxicity toward HeLa cells, which enables it to be applied in the visualization of Fe(III) or H 2 O 2 in living cells. The system was further applied in the detection of Fe(III) or glucose in human serum, and satisfactory results were obtained.

show abstract

Section: 44-47supporting

confidence: 53%

Section: -30mentioning

confidence: 99%

A multianalyte fluorescent carbon dots sensing system constructed based on specific recognition of Fe(iii) ions

et al. 2017

View full text Add to dashboard Cite

show abstract

“…It is the main peak at 399.4 eV that could be attributed to the pyridinic N accounted for 70%. The other small peak with binding energy of 401.2 eV originated from pyrrolic N [39]. As for the S2p XPS spectrum (Fig.…”

Section: Characterizationmentioning

confidence: 85%

“…3. The band in the region of 2800-3440 cm -1 aroused from stretching vibrations of O-H and N-H [39]. The absorption peak at 1700 cm -1 could be assigned to the stretching vibration of C=O [40].…”

Section: Characterizationmentioning

confidence: 96%

“…Up to now, masses of efforts has been made to prepare nitrogen-doped, sulfur-doped or nitrogen-and sulfur-co-doped C-dots from natural biomass, peptide, amino acid and other small molecule, such as garlic [22], goose [23], grapefruit peel [24], hair fiber [25], cocoon silk [26] thioglycolic acid [27] and the mixture of glucose and glycine [28].Compared to bare C-dots, nitrogen-doped C-dots might not only improve fluorescence properties but also allow to apply available functional groups for target sensing. The report about nitrogen and sulfur co-doped C-dots obtained by hydrothermal treatment of citric acid and L-cysteine indicated its excellent fluorescent property was ascribed to the doping changing surface state facilitating a high yield of radiative recombination [29]. Weng etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dual functional N- and S-co-doped carbon dots as the sensor for temperature and Fe3+ ions

Cui

Wang

Liu

et al. 2017

Sensors and Actuators B: Chemical

194

View full text Add to dashboard Cite

Multifunctional Carbon Nanodot‐Based Advanced Diagnostics and Therapeutics

Kapat,

Semwal,

Chillarge

et al. 2023

Advanced Therapeutics

View full text Add to dashboard Cite

Carbon nanodots (CNDs) are an emerging class of zero‐dimensional carbon nanomaterials that accumulated immense interest from researchers in the past two decades due to their facile synthesis and unique photo‐physical and ‐chemical properties. In particular, their long wavelength fluorescence emission, enhanced tissue penetration depth, excellent water dispersibility, tuneable surface chemistry, charge transfer properties, and biocompatibility have unveiled newer avenues for advanced application in therapeutics, diagnostics, theranostics, and tissue regeneration.The review typically emphasizes CNDs, excluding the other members of the carbon dots (CDs) family, which has not been covered before. After introducing CNDs in the carbon nanomaterial hierarchy, their synthesis, general properties, functionalization, and characterization are subsequently discussed. The following section elaborates on mechanisms of CNDs fluorescence, quenching, and associated factors based on the latest theories and models. The diagnostic, theranostic, and therapeutic applications of red/NIR‐emitting CNDs are thoroughly reviewed to cover the latest developments, including in vitro/in vivo bioimaging, thermoelectric and piezoelectric biosensing, and various soft and hard tissue regeneration. Overall, this work will enlighten passionate readers about the present status and futuristic aspects of CNDs in healthcare management, besides reported toxicities and challenges associated with their bench‐to‐bedside translation.This article is protected by copyright. All rights reserved

show abstract

Facile synthesis of nitrogen and sulfur co-doped carbon dots and application for Fe(III) ions detection and cell imaging

Cited by 207 publications

References 43 publications

A multianalyte fluorescent carbon dots sensing system constructed based on specific recognition of Fe(iii) ions

A multianalyte fluorescent carbon dots sensing system constructed based on specific recognition of Fe(iii) ions

Dual functional N- and S-co-doped carbon dots as the sensor for temperature and Fe3+ ions

Multifunctional Carbon Nanodot‐Based Advanced Diagnostics and Therapeutics

Contact Info

Product

Resources

About