Red emission nitrogen, boron, sulfur co-doped carbon dots for “on-off-on” fluorescent mode detection of Ag+ ions and l-cysteine in complex biological fluids and living cells

Huang, Shan; Yang, Erli; Yao, Jinhuan; Liu, Yi; Xiao, Qi

doi:10.1016/j.aca.2018.06.051

Cited by 134 publications

(55 citation statements)

References 44 publications

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“…Analyte induced fluorescence quenching of C dots is common through the inner filter effect and electron transfer. C dots have been used for quantitation of metal ions such as Ag + , Hg 2+ , Fe 3+ , and Cu 2+ 52d,75. Through the interactions like coordination of their surface functional groups, including carboxylate and amino, with metal ions, C dots prepared from carboxylic acids, amines, and amino acids provide selectivity toward some metal ions.…”

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

“…Through the interactions like coordination of their surface functional groups, including carboxylate and amino, with metal ions, C dots prepared from carboxylic acids, amines, and amino acids provide selectivity toward some metal ions. Once the C dots interact with the metal ions, their fluorescence can be quenched through electron transfer or inner filter effect 22b,75c,76. For instance, C dots synthesized from citric acid and tris(hydroxymethyl)methyl amine exhibited down‐ and up‐conversion fluorescence properties with excitation wavelengths at 330 and 660 nm and emission wavelengths at 399 and 398 nm, respectively .…”

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

“…The C dots were used to detect Hg 2+ in the concentration range of 0–40 × 10 −6 m based on static and dynamic quenching mechanism. Similarly, C dots prepared from citric acid,75c edible mushrooms, and cysteine were used for quantitation of Hg 2+ , with limits of detection (LODs) of 20 × 10 −9 , 4.13 × 10 −9 , and 14 × 10 −9 m , respectively. C dots prepared from polyurethane, with a blue‐green emission and a QY of 33%, were sensitive (LOD of 2.8 × 10 −6 m ) and selective for quantitation of Ag + through the static quenching process .…”

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

“…C dots prepared from polyurethane, with a blue‐green emission and a QY of 33%, were sensitive (LOD of 2.8 × 10 −6 m ) and selective for quantitation of Ag + through the static quenching process . C dots prepared from a plant (Jinhua bergamot) were applied for quantitation of Fe 3+ and Hg 2+ , with LODs of 0.075 × 10 −6 m and 5.5 × 10 −9 m , respectively 75b. Nitrogen‐doped C dots from black soya beans provide high sensitivity and selectivity for the detection of Fe 3+ with static quenching characteristics .…”

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

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Recent Advances and Sensing Applications of Carbon Dots

2019

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Carbon dots (C dots) with biocompatibility, brightness, stability against photoirradiation and salt, and ease in preparation have become important materials for sensing and imaging. They can be prepared from natural materials and small organic molecules through hydrothermal, microwave‐assistant, and electrochemical methods, with advantages of simplicity and low cost. To enhance the quantum yields of C dots in the red and near‐infrared regions, doping of C dots with heteroatoms such as nitrogen and sulfur has been suggested. C dots both with and without being functionalized recognition elements such as antibodies and aptamers are selective and sensitive for sensing of analytes, including metal ions (e.g., Fe3+, Hg2+, Cu2+), small molecules (e.g., H2O2, cysteine, glutathione), and biopolymers like proteins, as well as for in vitro and in vivo imaging. Depending on the size, charge, and surface ligands of C dots used to label cells, fluorescence images of different organelles are shown. Multicolor images of bacteria, mammalian cells, and plant tissues incubated with C dots are realized when excited at different wavelengths. In this review, many excellent sensing and imaging examples of C dots are presented to highlight their features and to show their challenges for analytical applications.

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Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

Section: Sensing and Imaging Applicationsmentioning

confidence: 99%

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Recent Advances and Sensing Applications of Carbon Dots

2019

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“…21 The high-resolution TEM (HRTEM) image ( Fig. 1b) of the CQDs reveals the lattice fringes with d-spacing of 0.21 nm and 0.12 nm, corresponding to the plane of (100) and (110) of graphite, 21,22 respectively. The orderly and clear lattice fringes indicate that the CQDs were successfully prepared.…”

Section: Characterization Of Cqdsmentioning

confidence: 99%

Carbon quantum dots derived from the extracellular polymeric substance of anaerobic ammonium oxidation granular sludge for detection of trace Mn(vii) and Cr(vi)

Liu

Liao

et al. 2020

RSC Adv.

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Multifunctional Carbon Nanodot‐Based Advanced Diagnostics and Therapeutics

Kapat,

Semwal,

Chillarge

et al. 2023

Advanced Therapeutics

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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

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Red emission nitrogen, boron, sulfur co-doped carbon dots for “on-off-on” fluorescent mode detection of Ag+ ions and l-cysteine in complex biological fluids and living cells

Cited by 134 publications

References 44 publications

Recent Advances and Sensing Applications of Carbon Dots

Recent Advances and Sensing Applications of Carbon Dots

Carbon quantum dots derived from the extracellular polymeric substance of anaerobic ammonium oxidation granular sludge for detection of trace Mn(vii) and Cr(vi)

Multifunctional Carbon Nanodot‐Based Advanced Diagnostics and Therapeutics

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