Highly Selective Fluorescence Turn-On Sensor for Fluoride Detection

Sui, Binglin; Kim, Bosung; Zhang, Yuanwei; Frazer, Andrew; Belfield, Kevin D.

doi:10.1021/am400588w

Cited by 149 publications

(55 citation statements)

References 47 publications

(56 reference statements)

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“…The effective fluorescent probes for Fe 3+ and F ‐ ions detection is mainly limited to organic fluorescent molecular, quantum dots, carbon dots and their complexes . However, those have several drawbacks for practical applications due to their poor stability, complicated synthesis route, complex sample preparation, relatively high cost of starting materials, and high toxicity towards biological system ,. Therefore, the development of a facile synthesis, photostable, highly efficient, low‐cost and environmental friendly fluorescence probe sensor for rapid qualitative as well as quantitative analysis of Fe 3+ and F ‐ ions in real world water samples is still worthwhile and challenging.…”

Section: Introductionsupporting

confidence: 61%

Development of Highly Efficient Dual Sensor Based on Carbon Dots for Direct Estimation of Iron and Fluoride Ions in Drinking Water

et al. 2019

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The fluorescent nanomaterial carbon dots (CDs) have attracted tremendous attention in the recent times because of their unique physico‐chemical characteristics. Highly fluorescent CDs were prepared through a simple and nontoxic one‐step hydrothermal carbonization of polyvinylpyrrolidone (PVP). The as‐synthesised CDs, without any pre‐treatments or post‐treatments, show high stability over a broad pH range and have an excellent potential in chemical sensing applications. The as‐prepared CDs have been demonstrated to be an excellent nano probe for Fe3+ ions sensing in aqueous media based on the fluorescence quenching with high sensitivity (lower limit of detection ∼ 1 μM) and selectivity towards Fe3+ ions. “Turn off” fluorescence arises due to the formation of CDs‐Fe3+ nanocomposite complex in the solution. The nanocomposite complex forms by the attachment of Fe3+ ions to the surface emissive site of the CDs, resulting in an obvious fluorescence quenching. Here, CDs itself act as a promising nano carrier for loading of Fe3+ ions to form the CDs‐Fe3+ nanocomposite complex in the solution. In addition to all, in this study we are intensely focused to explore the application of CDs‐Fe3+ nanocomposite complex. We have used the CDs‐Fe3+ nanocomposite complex as a novel sensor probe for the detection of F‐ ions in aqueous media based on “Turn on” fluorescence mechanism. “Turn on” fluorescence occurs due to the formation of thermodynamically highly stable [FeF6]3‐ complex and bare CDs in the solution. The developed sensor has high sensitivity (lower limit of detection ∼ 1 μM) and selectivity towards F‐ ions over a wide‐ranging other competing anions. Finally, we successfully demonstrate the real life application of the developed sensor by estimating the trace F‐ ions in the real world drinking water samples.

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Section: Introductionsupporting

confidence: 61%

Development of Highly Efficient Dual Sensor Based on Carbon Dots for Direct Estimation of Iron and Fluoride Ions in Drinking Water

et al. 2019

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“…[ 30 ] Numerous colorimetric sensors have been developed to detect F − ions using the Lewis acidic interaction, H-bond coordination, and fl uoride-triggered Si-O bond cleavage mechanism. [ 26,28,31 ] However, most of these sensors either work only in organic solutions or require organic solutions for application in the aqueous phase because of their hydrophobic chromophores. [26][27][28][29][30][31] H-SiNWs can be considered as aqueous phase colorimetric sensors for F − because Si has a specifi c binding to F, and their bond dissociation energies can be as high as 540 kJ mol −1 .…”

Section: Resultsmentioning

confidence: 99%

Hydrogen‐Terminated Si Nanowires as Label‐Free Colorimetric Sensors in the Ultrasensitive and Highly Selective Detection of Fluoride Anions in Pure Water Phase

Wang

Fan

Tong

et al. 2015

Adv Funct Materials

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The detection of anions in pure water phase with colorimetric sensor is a long standing challenge. As one of the most important anions, F– is associated with nerve gases and the refinement of uranium for nuclear weapons. However, limited by its anions nature, few of the reported colorimetric sensors can successfully applied to detect F–1 in pure water phase. This work designs a colorimetric sensor for F–1 pure water phase detection by taking the advantages of the strong specific binding between F and Si, as well as the color‐changing property of H‐terminated Si nanowires (SiNWs). The sensor demonstrates ultra‐sensitivity, high selectivity, and good stability. The results reveal particular interest for the development of new type aqueous phase anions sensors with SiNWs.

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“…The fluorene derivative 124 with two 1,2,3-triazolium units represents a highly selective fluoride sensor [121]. A marked electrochemical selectivity again for fluoride was found with a ferrocene-based anion receptor 125 containing a 1,2,3triazolium donor group [122] (Fig.…”

Section: Application Of 123-triazolium Ionic Liquids In Catalysismentioning

confidence: 99%

Chemistry of 1,2,3-Triazolium Salts

Yacob¹,

Liebscher²

2014

Topics in Heterocyclic Chemistry

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1,2,3-Triazolium salts have been known for a long time. However, their potential as ionic liquids and catalysts was recognized only quite recently. 1,2,3-Triazolium ionic liquids can serve as solvent, as catalyst, as hosts in anion recognition and as components of molecular machines. The major trends in application involve tethering catalytically active species such as (S)-proline with triazolium ionic liquids and the use as anion recognizing organocatalysts. Such catalysts are interesting not only due to their recyclability but also because of their outstanding tuneable properties. They can have wide liquid range, thermal stability, tuneable polarity, low flammability, tuneable solubility and low vapour pressure along with ease of separation. The syntheses of 1,2,3-triazolium salts are mainly based on the copper catalysed azide-alkyne cycloaddition (CuAAC) as the most famous click reaction, and subsequent N-alkylation of the resulting 1,2,3-triazoles. This synthetic route has the advantage of having four structural units, i.e. the alkyne, the azide, the alkylating agent and the counter anion that can be manipulated in order to tune the properties of the resulting ionic liquid. Unlike the imidazolium ionic liquids 1,2,3-triazolium salts do not have an acidic proton at position 2, which could make them inappropriate for reactions under basic conditions. The low acidity of 1,2,3triazolium salts in position 4 is exploited in the formation of 1,2,3-triazol-4-ylidene metal complexes with marked catalytic properties.

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Highly Selective Fluorescence Turn-On Sensor for Fluoride Detection

Cited by 149 publications

References 47 publications

Development of Highly Efficient Dual Sensor Based on Carbon Dots for Direct Estimation of Iron and Fluoride Ions in Drinking Water

Development of Highly Efficient Dual Sensor Based on Carbon Dots for Direct Estimation of Iron and Fluoride Ions in Drinking Water

Hydrogen‐Terminated Si Nanowires as Label‐Free Colorimetric Sensors in the Ultrasensitive and Highly Selective Detection of Fluoride Anions in Pure Water Phase

Chemistry of 1,2,3-Triazolium Salts

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