A colorimetric probe for dual sensing of Hg2+ and Cu2+ ions in water

Sie, Yi Wun; Li, Chia Lin; Wan, Chin Feng; Chen, Jie Hong; Hu, Ching Han; Yan, Hongbin; Wu, An Tai

doi:10.1016/j.ica.2017.08.035

Cited by 14 publications

(2 citation statements)

References 31 publications

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“…). By calculating from the gradient ( k = 3.36 × 10, R 2 = 0.995) and σ = 1.63 × 10 −3 , the detection limit was found to be 1.46 μmol L −1 (equal to 0.292 mg kg −1 ), which is comparable to those (0.11–4.6 μmol L −1 ) of other colorimetric chemosensors for Hg 2+ (Table ) and lower than the maximum allowable level of Hg 2+ for food and animal feed regulated by the US Food and Drug Administration (1 mg kg −1 ) . As shown in Fig.…”

Section: Resultsmentioning

confidence: 70%

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

Inoue

Aikawa

Fukushima

2018

Polymer International

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We investigated a colorimetric chemosensor for Hg2+ based on a mixture of xylidyl blue I as an anionic organic dye and poly(diallyldimethylammonium chloride) as a cationic polyelectrolyte in an aqueous solution at pH 7.5. The addition of Hg2+ to the mixture induced a bathochromic shift in the absorption spectra with a distinct color change from red to green which was readily identifiable by the naked eye, whereas the other metal ions gave rise to insignificant color changes. By contrast, upon adding Hg2+ to xylidyl blue I alone, the solution underwent no significant change in color. Moreover, a stoichiometric ratio for the complex between xylidyl blue I and Hg2+ in the presence of poly(diallyldimethylammonium chloride) was determined to be 1:1 by the absorption titration curve and Job's plot. Thus, the mixture can be used as a selective naked‐eye colorimetric chemosensor for Hg2+ over other common metal ions. This study raises the possibility that the combination of an organic dye and an oppositely charged polyelectrolyte is a potential candidate for the easy construction of a new chemosensor system. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 70%

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

Inoue

Aikawa

Fukushima

2018

Polymer International

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“…In contrast, fluorescence spectroscopy has the advantages of simple operation, low cost, high sensitivity, small error, and rapid detection, 8 and has a wide range of applications in the detection of metal ions, anions and biomolecules. [9][10][11][12] So far, a variety of fluorescent probes, such as coumarin-, 2,13,14 naphthalimide-, 15 pyrazoline-, 16,17 benzothiazole-, 18 BODIPY-, 19 fluorescein-, 20,21 pyrene-, 22 anthracene-, 22 carbazole-, 23 and flavone-based 24 derivatives, have been developed for hydrazine detection. However, these fluorescent probes are low molar mass molecules.…”

Section: Introductionmentioning

confidence: 99%

A covalent organic polymer for turn-on fluorescence sensing of hydrazine

Wang

Jiang

et al. 2022

J. Mater. Chem. C

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A Selective and Reversible Fluorescent Probe for Cu²⁺ and GSH Detection in Aqueous Environments

Wang

Huang

et al. 2023

ChemistrySelect

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Cu2+ and Biothiols play a critical role in diverse biological processes in organisms. Herein, we reported using a well‐known ESPT molecule 2‐(2’‐Pyridyl)benzimidazol(PBI) as a fluorescent probe to detect Cu2+ and GSH in aqueous solution. PBI presented a rapid fluorescence “ON‐OFF” response on Cu2+ over other metal cations, with a low detection limit (39.4 nM), and also been applied in real water samples detection. Through mass spectroscopy, single crystal X‐ray diffraction and DFT calculation, we confirmed that two PBI molecules would form a stable complex with one Cu2+. After adding GSH, PBI‐Cu2+ complex would release the free probe, and the “on‐off‐on” recognition process to achieve continuous detection of Cu2+ and GSH.

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A colorimetric probe for dual sensing of Hg2+ and Cu2+ ions in water

Cited by 14 publications

References 31 publications

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

A covalent organic polymer for turn-on fluorescence sensing of hydrazine

A Selective and Reversible Fluorescent Probe for Cu²⁺ and GSH Detection in Aqueous Environments

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A colorimetric probe for dual sensing of Hg2+ and Cu2+ ions in water

Cited by 14 publications

References 31 publications

Colorimetric detection of Hg2+ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

Colorimetric detection of Hg2+ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

A covalent organic polymer for turn-on fluorescence sensing of hydrazine

A Selective and Reversible Fluorescent Probe for Cu2+ and GSH Detection in Aqueous Environments

Contact Info

Product

Resources

About

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

A Selective and Reversible Fluorescent Probe for Cu²⁺ and GSH Detection in Aqueous Environments