One-pot synthesis of efficient multifunctional nitrogen-doped carbon dots with efficient yellow fluorescence emission for detection of hypochlorite and thiosulfate

Gao, Yifang; Liu, Yang; Zhang, Huilin; Lü, Wenjing; Jiao, Yuan; Shuang, Shaomin; Dong, Chuan

doi:10.1039/d2tb01695h

Cited by 12 publications

(2 citation statements)

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“…The range of detection is 0.067−19.33 μM and 24−98 μM, with a low limit of detection (LOD) of 0.013 μM. 38 Similarly, Meng et al synthesized multifunctional CDs (O-CDs) for ClO − determination by static quenching, and their linear range is 2.5−90 μM, with an LOD of 0.46 μM. 39 Although CDs have been widely used for ClO − detection, there still remain some problems to be solved, such as a complex synthesis process, long detection time, and short detection range.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of ClO – will oxidize the amino groups on the surface of NCDs to nitro groups, which can be used to identify ClO – . The range of detection is 0.067–19.33 μM and 24–98 μM, with a low limit of detection (LOD) of 0.013 μM . Similarly, Meng et al synthesized multifunctional CDs (O-CDs) for ClO – determination by static quenching, and their linear range is 2.5–90 μM, with an LOD of 0.46 μM .…”

Section: Introductionmentioning

confidence: 99%

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Carbon Quantum Dots for Rapid and Ratiometric Fluorescence Determination of Hypochlorite

Shao,

Guo,

Zhong

et al. 2024

ACS Appl. Nano Mater.

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Herein, we present a method for rapid ratiometric fluorescence detection of hypochlorite (ClO − ) by carbon quantum dots (CDs). Glutathione (GSH) was utilized as the starting material for the synthesis of CDs through a hydrothermal process. A maximum fluorescence intensity at an emission wavelength of 435 nm was observed under an excitation wavelength of 335 nm. The inner filter effect (IFE) of curcumin (CCM) on CDs could be utilized to reduce the fluorescence intensity of CDs at 435 nm, while an emission peak emerged at 540 nm. ClO − could rapidly oxidize CCM due to its oxidizing properties, which weakened the IFE, leading to a decrease in the fluorescence intensity of CCM at 540 nm, while the fluorescence intensity of CDs at 435 nm is restored. In addition, CDs exhibited excellent selectivity and sensitivity in the fluorescence detection of ClO − , and a substantial sensitivity in the detection of ClO − was established within a concentration range of 1−1500 μM with a limit of detection of 36.54 nM. The spiked recovery tests of tap water, swimming pool water, and milk samples showed the feasibility of using CDs for the ratiometric fluorescence detection of ClO − in real samples.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Quantum Dots for Rapid and Ratiometric Fluorescence Determination of Hypochlorite

Shao,

Guo,

Zhong

et al. 2024

ACS Appl. Nano Mater.

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A Ratiometric Fluorescent Detection Platform Using G‐CDs@[Ru(bpy)₃]²⁺ for the Specific Detection of Hypochlorite and Live Cell Imaging

Rong,

He,

Wang

et al. 2024

Advanced Sensor Research

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Hypochlorite (ClO−), an essential reactive oxygen species (ROS) in physiological processes, is identified to be closely connected with oxidative stress and related diseases. Meanwhile, ClO− is a commonly‐used disinfector for water treatment, and in public places, under acidic conditions, it's easily decomposed into hypertoxic chlorine gas. Since the strong oxidizing property of ClO−, many oxidizing agents may disturb the ClO− detection. Specific and accurate detection of ClO− with superior sensitivity is a challenge. In this work, a sensing platform for rapid, sensitive, and specific ClO− detection is constructed using green fluorescent carbon dots (G‐CDs), with a linear detection range of 0.5–11 µm and a detection limit of 0.233 µm. Moreover, introducing a red fluorescent tripyridinium ruthenium ([Ru(bpy)3]2+) as a reference, a ratiometric fluorescence nanoprobe G‐CDs@[Ru(bpy)3]2+ is prepared and shows favorable intracellular imaging of exogenous and endogenous ClO−. With G‐CDs@[Ru(bpy)3]2+‐based test paper microarrays and a color recognition APP, a smartphone‐based sensing system for point‐of‐care testing of ClO− is also fabricated. In summary, this work proposed a versatile and economical smartphone‐based sensing system that featured reliability and simplicity, and suggested its potential applications in environmental water quality monitoring and live cell imaging.

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Integrating carbon dots and gold/silver core-shell nanoparticles to achieve sensitive detection of dopamine with fluorometric/colorimetric dual signal

Li,

Lu,

Yang

et al. 2024

Anal Bioanal Chem

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One-pot synthesis of efficient multifunctional nitrogen-doped carbon dots with efficient yellow fluorescence emission for detection of hypochlorite and thiosulfate

Abstract: CDs-based ratiometric fluorescence probes are of great meaning for visual detection, but accomplishing this goal is still a particularly challenging task. Herein, a bright yellow fluorescence nitrogen doping carbon dots...

Cited by 12 publications

References 42 publications

Carbon Quantum Dots for Rapid and Ratiometric Fluorescence Determination of Hypochlorite

Carbon Quantum Dots for Rapid and Ratiometric Fluorescence Determination of Hypochlorite

A Ratiometric Fluorescent Detection Platform Using G‐CDs@[Ru(bpy)₃]²⁺ for the Specific Detection of Hypochlorite and Live Cell Imaging

Integrating carbon dots and gold/silver core-shell nanoparticles to achieve sensitive detection of dopamine with fluorometric/colorimetric dual signal

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One-pot synthesis of efficient multifunctional nitrogen-doped carbon dots with efficient yellow fluorescence emission for detection of hypochlorite and thiosulfate

Abstract: CDs-based ratiometric fluorescence probes are of great meaning for visual detection, but accomplishing this goal is still a particularly challenging task. Herein, a bright yellow fluorescence nitrogen doping carbon dots...

Cited by 12 publications

References 42 publications

Carbon Quantum Dots for Rapid and Ratiometric Fluorescence Determination of Hypochlorite

Carbon Quantum Dots for Rapid and Ratiometric Fluorescence Determination of Hypochlorite

A Ratiometric Fluorescent Detection Platform Using G‐CDs@[Ru(bpy)3]2+ for the Specific Detection of Hypochlorite and Live Cell Imaging

Integrating carbon dots and gold/silver core-shell nanoparticles to achieve sensitive detection of dopamine with fluorometric/colorimetric dual signal

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A Ratiometric Fluorescent Detection Platform Using G‐CDs@[Ru(bpy)₃]²⁺ for the Specific Detection of Hypochlorite and Live Cell Imaging