Zr(H<sub>2</sub>O)<sub>2</sub>EDTA modulated luminescent carbon dots as fluorescent probes for fluoride detection

Liu, Jiaming; Lin, Liping; Wang, Xinxing; Li, Jiao; Cui, Ma-Lin; Jiang, Shu-Lian; Cai, Wen-Lian; Zhang, Lihong; Zheng, Zishan

doi:10.1039/c2an36055a

Cited by 78 publications

(34 citation statements)

References 21 publications

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“…Among these aqueous organic contaminants, EDTA is one of the most potentially dangerous http pollutants since it is used in many products such as herbicides, fertilizers, detergents, decontaminants in the nuclear industry, etc [1][2][3][4]. EDTA is widely used for water decontamination purposes in nuclear industry for its unique spatial conformation which can bind strongly to most metals.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of magnetically separable Fe3O4@PANI/TiO2 photocatalyst with fast charge migration for photodegradation of EDTA under visible-light irradiation

Tian

Zhao

et al. 2016

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Synthesis of magnetically separable Fe3O4@PANI/TiO2 photocatalyst with fast charge migration for photodegradation of EDTA under visible-light irradiation

Tian

Zhao

et al. 2016

Chemical Engineering Journal

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“…Moreover, the main element of carbon NSs is carbon, which is not thought to be a toxic substance as compared to the heavy metals from conventional QDs. Therefore, the carbon NSs are expected to have great potential use in small active molecule detection, single optical fibres and nanosensors [11,12,13,14]. …”

Section: Introductionmentioning

confidence: 99%

Nanostructures Derived from Starch and Chitosan for Fluorescence Bio-Imaging

Huang

et al. 2016

Nanomaterials

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Fluorescent nanostructures (NSs) derived from polysaccharides have drawn great attention as novel fluorescent probes for potential bio-imaging applications. Herein, we reported a facile alkali-assisted hydrothermal method to fabricate polysaccharide NSs using starch and chitosan as raw materials. Transmission electron microscopy (TEM) demonstrated that the average particle sizes are 14 nm and 75 nm for starch and chitosan NSs, respectively. Fourier transform infrared (FT-IR) spectroscopy analysis showed that there are a large number of hydroxyl or amino groups on the surface of these polysaccharide-based NSs. Strong fluorescence with an excitation-dependent emission behaviour was observed under ultraviolet excitation. Interestingly, the photostability of the NSs was found to be superior to fluorescein and rhodamine B. The quantum yield of starch NSs could reach 11.12% under the excitation of 360 nm. The oxidative metal ions including Cu(II), Hg(II)and Fe(III) exhibited a quench effect on the fluorescence intensity of the prepared NSs. Both of the two kinds of the multicoloured NSs showed a maximum fluorescence intensity at pH 7, while the fluorescence intensity decreased dramatically when they were put in an either acidic or basic environment (at pH 3 or 11). The cytotoxicity study of starch NSs showed that low cell cytotoxicity and 80% viability was found after 24 h incubation, when their concentration was less than 10 mg/mL. The study also showed the possibility of using the multicoloured starch NSs for mouse melanoma cells and guppy fish imaging.

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“…Its excess is not only toxic to aquatic organisms and plants, but also causes serious health problems [89]. Liu's group designed a novel fluorescent probe for F − detection based on CDs [90]. CDs were synthesized by microwave irradiation of glucose and poly(ethylene glycol)-200.…”

Section: Fluoride Detectionmentioning

confidence: 99%

Carbon dots: synthetic methods and applications as fluorescent probes for the detection of metal ions, inorganic anions and organic molecules

et al. 2015

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and biological materials. It has been found that fluorescent probes are one of the most successful approaches. Fluorescent probes such as organic molecules have the advantages of high sensitivity and fast analysis, but they suffer from low water solubility. Semiconductor quantum dots (QDs) can be used as fluorescent probes, while the issue of toxicity limits their practical applications [1,2]. Fluorescent carbon dots (CDs) with similar physicochemical properties of QDs and relatively low in toxicity and cost of synthesis are the most suitable alternatives to organic molecules and QDs [3]. CDs gradually become a rising star as fluorescent probes in a number of fields [4,5]. CDs, a new member of carbon nanomaterial family with diameter below 10 nm, have great fluorescent performance, excellent dispersity and biocompatibility [6,7]. The synthetic methods of CDs can be classified into top-down and bottom-up approaches [8].Top-down methods rely on reducing the size of the graphite-like structures until the products become fluorescent nanoparticles. In the bottom-up processes, anything with carbogenic nature can synthesize CDs under suitable conditions [9]. Always the synthetic strategies and the precursors affect the internal properties of the resulting nanoparticles such as the size, crystallinity, oxygen or nitrogen content, emission characteristics and compatibility with a particular solvent [10][11][12][13]. Particularly, with the advantages of great dispersibility in water and tunable fluorescence, CDs are also becoming attractive alternatives for novel fluorescence markers, fluorescent probes and optical probes [14,15].In this review, we mainly summarize the recent advances of CDs about the easy synthesises, sensitive fluorescent detections of ions and organic molecules and possible detection mechanisms. It is our aim that the synthesis of this knowledge will offer valuable insight and inspire research into the exciting areas. Some suggestions and an outlook are put forward about the applications of CDs.Abstract Carbon dots (CDs), a new class of fluorescent materials, have recently attracted considerable research interest. CDs have overcome some defects of traditional nanomaterial. In addition to their small size and optical properties, CDs have the excellent advantages of good biocompatibility and are easy to achieve surface functionalization. Since this discovery, CDs can be widely used in the field of biochemical sensing and environmental testing. This article reviews the progress in the research and development of CDs on their syntheses, applications for the fluorescence detection and possible mechanisms. Finally, we have an outlook of the research trends and future prospects of CDs.

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Zr(H₂O)₂EDTA modulated luminescent carbon dots as fluorescent probes for fluoride detection

Cited by 78 publications

References 21 publications

Synthesis of magnetically separable Fe3O4@PANI/TiO2 photocatalyst with fast charge migration for photodegradation of EDTA under visible-light irradiation

Synthesis of magnetically separable Fe3O4@PANI/TiO2 photocatalyst with fast charge migration for photodegradation of EDTA under visible-light irradiation

Nanostructures Derived from Starch and Chitosan for Fluorescence Bio-Imaging

Carbon dots: synthetic methods and applications as fluorescent probes for the detection of metal ions, inorganic anions and organic molecules

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Zr(H2O)2EDTA modulated luminescent carbon dots as fluorescent probes for fluoride detection

Cited by 78 publications

References 21 publications

Synthesis of magnetically separable Fe3O4@PANI/TiO2 photocatalyst with fast charge migration for photodegradation of EDTA under visible-light irradiation

Synthesis of magnetically separable Fe3O4@PANI/TiO2 photocatalyst with fast charge migration for photodegradation of EDTA under visible-light irradiation

Nanostructures Derived from Starch and Chitosan for Fluorescence Bio-Imaging

Carbon dots: synthetic methods and applications as fluorescent probes for the detection of metal ions, inorganic anions and organic molecules

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Zr(H₂O)₂EDTA modulated luminescent carbon dots as fluorescent probes for fluoride detection