Fluorescent cadmium sulfide nanoparticles for selective and sensitive detection of toxic pesticides in aqueous medium

Walia, Shanka; Acharya, Amitabha

doi:10.1007/s11051-014-2778-3

Cited by 32 publications

(6 citation statements)

References 41 publications

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“…[83] In previous studies, detecting pesticide residues by using conventional QDs through fluorescence quenching has emerged endlessly. [84,85] In this context, Yang et al used methylammonium lead halide perovskite quantum dots (MAPB-QDs) doped PDMS to prepare fluorescent colorimetric cards in order to detect the polar organochlorine pesticides (OCPs) in crops and the environment. [86] When OCPs reacted with MAPB-QDs, the chlorine element on OCPs would replace the original terminal groups of MAPB-QDs and completely doped into QDs, thus changing the crystal structure and increasing the band gap of QDs, eventually leading to blue shift of its wavelength.…”

Section: Sensorsmentioning

confidence: 99%

“…In previous studies, detecting pesticide residues by using conventional QDs through fluorescence quenching has emerged endlessly. [ 84,85 ] In this context, Yang et al. used methylammonium lead halide perovskite quantum dots (MAPB‐QDs) doped PDMS to prepare fluorescent colorimetric cards in order to detect the polar organochlorine pesticides (OCPs) in crops and the environment.…”

Section: Applications Of Pfmsmentioning

confidence: 99%

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Preparation and Applications of Polydimethylsiloxane‐Based Fluorescent Materials

Dong

Zhong

et al. 2023

Macromol. Rapid Commun.

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In the past few years, fluorescent materials have received significant attention due to their fascinating luminescent properties and wide-ranging applications. Polydimethylsiloxane (PDMS) has also attracted the interest of many researchers due to its remarkable performances. The combination of fluorescence and PDMS will undoubtedly produce abundant advanced multifunctional materials. Although numerous achievements have been made in this field, there is still no review to summarize the relevant research. This review summarizes the state-of-the-art achievements made in PDMS-based fluorescent materials (PFMs). First, the preparation of PFM is overviewed following a classification according to the fluorescent sources, including organic fluorescent molecules, perovskite, photoluminescent nanomaterials, and metal complexes. Their applications in sensors, fluorescent probes, multifunctional coatings, and anticounterfeiting are then introduced. Finally, the challenges and development trends in the field of PFMs are presented.

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Section: Sensorsmentioning

confidence: 99%

Section: Applications Of Pfmsmentioning

confidence: 99%

Preparation and Applications of Polydimethylsiloxane‐Based Fluorescent Materials

Dong

Zhong

et al. 2023

Macromol. Rapid Commun.

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“…An intriguing example using metallic nanoparticles was reported by Walia and Acharya, in which fluorescent cadmium sulfide nanoparticles were used for the detection of organochlorine pesticides (Walia and Acharya, 2014). This sensor operated through pesticide-induced increases in the fluorescence emission of the cadmium sulfide nanoparticles.…”

Section: Nanoparticlesmentioning

confidence: 99%

Fluorescence-Based Sensing of Pesticides Using Supramolecular Chemistry

Levine

2021

Front. Chem.

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The detection of pesticides in real-world environments is a high priority for a broad range of applications, including in areas of public health, environmental remediation, and agricultural sustainability. While many methods for pesticide detection currently exist, the use of supramolecular fluorescence-based methods has significant practical advantages. Herein, we will review the use of fluorescence-based pesticide detection methods, with a particular focus on supramolecular chemistry-based methods. Illustrative examples that show how such methods have achieved success in real-world environments are also included, as are areas highlighted for future research and development.

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“…Wales et al constructed a sensor for the selective detection of dicofol, a substance used to kill mites. For this purpose, they used CdS QDs with glutathione on their surface, whose both amino- and carboxyl- functional groups interact with chloride groups in the dicofol structure, thus leading to an increase in fluorescence intensity, which was directly proportional to the dicofol concentration in the studied sample [ 27 , 28 ].…”

Section: Basic Strategies For Analyte Detectionmentioning

confidence: 99%

Optical Sensors Based on II-VI Quantum Dots

et al. 2019

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Fundamentals of quantum dots (QDs) sensing phenomena show the predominance of these fluorophores over standard organic dyes, mainly because of their unique optical properties such as sharp and tunable emission spectra, high emission quantum yield and broad absorption. Moreover, they also indicate no photo bleaching and can be also grown as no blinking emitters. Due to these properties, QDs may be used e.g., for multiplex testing of the analyte by simultaneously detecting multiple or very weak signals. Physico-chemical mechanisms used for analyte detection, like analyte stimulated QDs aggregation, nonradiative Förster resonance energy transfer (FRET) exhibit a number of QDs, which can be applied in sensors. Quantum dots-based sensors find use in the detection of ions, organic compounds (e.g., proteins, sugars, volatile substances) as well as bacteria and viruses.

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Fluorescent cadmium sulfide nanoparticles for selective and sensitive detection of toxic pesticides in aqueous medium

Cited by 32 publications

References 41 publications

Preparation and Applications of Polydimethylsiloxane‐Based Fluorescent Materials

Preparation and Applications of Polydimethylsiloxane‐Based Fluorescent Materials

Fluorescence-Based Sensing of Pesticides Using Supramolecular Chemistry

Optical Sensors Based on II-VI Quantum Dots

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