Facile synthesis of chitosan-capped ZnS quantum dots as an eco-friendly fluorescence sensor for rapid determination of bisphenol A in water and plastic samples

Cao, Xianyi; Shen, Furao; Zhang, Minwei; Bie, Jiaxin; Liu, Xin; Luo, Yanru; Guo, Jiajia; Sun, Chia‐Chung

doi:10.1039/c3ra47868h

Cited by 43 publications

(25 citation statements)

References 31 publications

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“…4a. The bandgap of chitosan-coated ZnS nanocrystals is estimated to be 3.8 eV, which is in good agreement with the previous reports [21, 41] and is assigned to the optical transitions of the excitonic states in ZnS. The obvious blue shift could be attributed to the existence of very small ZnS nanocrystalline particles [38].…”

Section: Resultssupporting

confidence: 90%

Mechanochemistry of Chitosan-Coated Zinc Sulfide (ZnS) Nanocrystals for Bio-imaging Applications

et al. 2017

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The ZnS nanocrystals were prepared in chitosan solution (0.1 wt.%) using a wet ultra-fine milling. The obtained suspension was stable and reached high value of zeta potential (+57 mV). The changes in FTIR spectrum confirmed the successful surface coating of ZnS nanoparticles by chitosan. The prepared ZnS nanocrystals possessed interesting optical properties verified in vitro. Four cancer cells were selected (CaCo-2, HCT116, HeLa, and MCF-7), and after their treatment with the nanosuspension, the distribution of ZnS in the cells was studied using a fluorescence microscope. The particles were clearly seen; they passed through the cell membrane and accumulated in cytosol. The biological activity of the cells was not influenced by nanoparticles, they did not cause cell death, and only the granularity of cells was increased as a consequence of cellular uptake. These results confirm the potential of ZnS nanocrystals using in bio-imaging applications.

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Section: Resultssupporting

confidence: 90%

Mechanochemistry of Chitosan-Coated Zinc Sulfide (ZnS) Nanocrystals for Bio-imaging Applications

et al. 2017

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“…In the past decade, eco-friendly, biocompatible, and green materials have been the subject of many economic and scientific projects [8,9,10], and have caused less damage to the environment. Oxide thin films under low annealing temperatures have been fabricated by using an inexpensive “water-inducement” technique [11] that combines a high-k-value YO X dielectric material with an eco-friendly water-inducement process [12]. Because of their superior performance, organic thin-film transistors (OTFTs) can be used to replace conventional thin-film transistors (TFTs).…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly and Biodegradable Biopolymer Chitosan/Y2O3 Composite Materials in Flexible Organic Thin-Film Transistors

Singh

et al. 2017

Materials

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Abstract:The waste from semiconductor manufacturing processes causes serious pollution to the environment. In this work, a non-toxic material was developed under room temperature conditions for the fabrication of green electronics. Flexible organic thin-film transistors (OTFTs) on plastic substrates are increasingly in demand due to their high visible transmission and small size for use as displays and wearable devices. This work investigates and analyzes the structured formation of aqueous solutions of the non-toxic and biodegradable biopolymer, chitosan, blended with high-k-value, non-toxic, and biocompatible Y 2 O 3 nanoparticles. Chitosan thin films blended with Y 2 O 3 nanoparticles were adopted as the gate dielectric thin film in OTFTs, and an improvement in the dielectric properties and pinholes was observed. Meanwhile, the on/off current ratio was increased by 100 times, and a low leakage current was observed. In general, the blended chitosan/Y 2 O 3 thin films used as the gate dielectric of OTFTs are non-toxic, environmentally friendly, and operate at low voltages. These OTFTs can be used on surfaces with different curvature radii because of their flexibility.

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“…It is even more serious as BPA can migrate into food or food simulants from the resin or polymeric materials, especially upon heating or at high temperature. 8 BPA is an environmental pollutant owing to its poor biodegradability. 9 Low-dose exposure to BPA produces an increasing risk suffering from diabetes mellitus, at the same time with a variety of adverse effects on metabolic organs such as pancreas, adipose tissue and liver.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Spectrophotometric Method Based on Diazotization- Coupling Reaction for Determination of Bisphenol A

Xu¹,

Wu²,

Duan³

et al. 2016

J. Braz. Chem. Soc.

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Bisphenol A (BPA) is an industrial material which can lead to endocrine disorders. In this work, a simple and sensitive spectrophotometric method for determination of BPA using diazotizationcoupling reaction was presented. To achieve the best performance of the developed method, the experimental parameters were optimized in terms of reagent concentration, reaction time, pH, and temperature. Under the optimal conditions, the absorbance increased linearly with the increasing concentration of BPA in the range of 0.16-10.4 μg mL-1 with the correlation coefficient of 0.9991 and the detection limit of 0.05 μg mL-1. Results achieved with the spectrophotometric method were compared with those obtained using high performance liquid chromatography (HPLC) method. The proposed method was successfully applied to determine BPA in milk and water bottle samples and satisfactory results were obtained, which make it very suitable for routine analysis of BPA in quality control laboratories.

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Facile synthesis of chitosan-capped ZnS quantum dots as an eco-friendly fluorescence sensor for rapid determination of bisphenol A in water and plastic samples

Abstract: Quantitative detection of BPA in water and plastic samples was developed based on fluorescence quenching of eco-friendly chitosan-capped ZnS QDs.

Cited by 43 publications

References 31 publications

Mechanochemistry of Chitosan-Coated Zinc Sulfide (ZnS) Nanocrystals for Bio-imaging Applications

Mechanochemistry of Chitosan-Coated Zinc Sulfide (ZnS) Nanocrystals for Bio-imaging Applications

Eco-Friendly and Biodegradable Biopolymer Chitosan/Y2O3 Composite Materials in Flexible Organic Thin-Film Transistors

Development of a Novel Spectrophotometric Method Based on Diazotization- Coupling Reaction for Determination of Bisphenol A

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