Enhanced dual fluorescence quenching of red and blue emission carbon dots by copper dimethyldithiocarbamate for selective ratiometric detection of ziram in foodstuff and water samples

Microchemical Journal, Год журнала: 2024, Номер 204, С. 111092 - 111092

Опубликована: Июнь 29, 2024

Язык: Английский

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Carbon Quantum Dots: Synthesis, Characteristics, and Quenching as Biocompatible Fluorescent Probes

Biosensors, Год журнала: 2025, Номер 15(2), С. 99 - 99

Опубликована: Фев. 10, 2025

Carbon quantum dots (CQDs), a new class of carbon-based nanomaterials, have emerged as nano-scaled probes with photoluminescence that an eco-friendly and bio-compatible nature. Their cost-efficient synthesis high yields make them indispensable due to their application in opto-electronic devices, including biosensors, bioimaging, environmental monitoring, light sources. This review provides intrinsic properties CQDs such excitation-dependent emission, biocompatibility, quenching properties. Diverse strategies for easy are divided into bottom-up top-down approaches detailed herein. In particular, we highlight luminescence properties, mechanisms could even be utilized the precise rapid detection biomolecules. We also discuss methodologies mitigation fluorescence quenching, which is pivotal biosensors bioimaging.

Язык: Английский

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Shedding Light on Heavy Metal Contamination: Fluorescein-Based Chemosensor for Selective Detection of Hg2+ in Water

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(6), С. 3186 - 3186

Опубликована: Март 10, 2024

This article discusses the design and analysis of a new chemical chemosensor for detecting mercury(II) ions. The is hydrazone made from 4-methylthiazole-5-carbaldehyde fluorescein hydrazide. structure was confirmed using various methods, including nuclear magnetic resonance spectroscopy, infrared spectroscopy with Fourier transformation, mass quantum calculations. sensor's ability in highly selective sensitive discovery Hg2+ ions water demonstrated. detection limit determined to be 0.23 µM. also used detect real samples living cells fluorescence spectroscopy. Chemosensor 1 its complex demonstrate significant tendency enter accumulate even at very low concentrations.

Язык: Английский

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Detection of Hg2+ using a dual-mode biosensing probe based on CuNCs@Zr-MOF@G-quadruplex structure

BME Frontiers, Год журнала: 2024, Номер 5

Опубликована: Янв. 1, 2024

Mercury (Hg

Язык: Английский

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Nano-engineered eco-friendly materials for food safety: Chemistry, design and sustainability

Food Chemistry, Год журнала: 2024, Номер 465, С. 141906 - 141906

Опубликована: Ноя. 4, 2024

Язык: Английский

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Fast and eco-friendly synthesis of carbon dots from pinecone for highly effective detection of 2,4,6-trinitrophenol in environmental samples

Environmental Technology, Год журнала: 2024, Номер unknown, С. 1 - 12

Опубликована: Июнь 17, 2024

2,4,6-Trinitrophenol (TNP) has high explosive risks and biological toxicity, there been considerable concern over the determination of TNP. In present work, fluorescent carbon dots (CDs) stemmed from a green source pinecone by facile hydrothermal approach. A novel environment- friendly probe was developed to efficiently detect TNP using obtained CDs with remarkable fluorescence stability. The exhibited obvious excitation dependence highest peaks for emission occurring at 321 411 nm, respectively. intensity is significantly reduced owing inner filter effect CDs. good linearity concentrations in range 0.025–20 μg mL−1, limit detection as low 8.5 ng mL−1. Additionally, proved successful sensing quantitatively actual environmental samples satisfied recoveries 95.6–99.6%. offered an environment-friendly, efficient, rapid, reliable platform detecting trace field.

Язык: Английский

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Nitrogen and Sulfur Co-doped Carbon Dots for Ratiometric Fluorometric Determination of Mercury Ions

Journal of Fluorescence, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Язык: Английский

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Facile Post‐Processing Approach to Modulate Fluorescent Properties and New Matrix‐Assisted Method to Achieve Solid‐State Luminescence of CDs Based on CTAB Surfactant

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 12, 2025

Abstract To realize the practical application of carbon dots (CDs), it is crucial to devise straightforward techniques that can finely modulate fluorescent properties CDs. Apart from that, imperative weaken aggregation‐caused quenching (ACQ) effect, which poses a significant challenge utilization solid‐state In this work, three CDs named as CDs‐1, CDs‐2, and CDs‐3 are synthesized, fluorescence tuning these successfully realized, assisted by cetyltrimethylammonium bromide (CTAB) surfactant, because its unique molecular structure conducive in bolstering intensity adjusting emission wavelength. Furthermore, luminescence achieved employing CTAB substrate matrix‐assisted synthesis composites CDs‐1@CTAB, CDs‐2@CTAB, CDs‐3@CTAB. Notably, photoluminescence quantum yield (PLQY) CDs‐2@CTAB reaches an impressive value high 79.31%, surpassing 70.29% obtained pristine CDs‐2. The experimental results reveal CDs@CTAB exhibit intriguing afterglow characteristics including room temperature phosphorescence (RTP) thermally activated delayed (TADF). This work confirms versatility highlights significance surfactant‐assisted strategies improving performance

Язык: Английский

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Ratiometric fluorescent detection of Hg2+ using dual-emissive carbon dots in an immiscible system

Microchimica Acta, Год журнала: 2025, Номер 192(4)

Опубликована: Март 26, 2025

Язык: Английский

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Narrow-Bandwidth Red-Emitting Carbon Dots from Epipremnum Aureum Leaves: “On-Off-On” Fluorescent Probe for Sensitive Detection of Hg²⁺ and Thiram

Опубликована: Янв. 1, 2025

Язык: Английский

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