Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury

Margaret L. Aulsebrook; Ethan Watkins; Michael R. Grace; Bim Graham; Kellie L. Tuck

doi:10.1002/slct.201702572

Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury

Margaret L. Aulsebrook, Ethan Watkins, Michael R. Grace, Bim Graham, Kellie L. Tuck

Research output: Contribution to journal › Article › Research › peer-review

21 Citations (Scopus)

Abstract

A method for temperature-dependent sensing of both inorganic mercury (Hg²⁺) and organic methyl mercury (MeHg⁺) with the same gold nanoparticle (AuNP) system was achieved. The AuNPs were functionalised with a thymine moiety and aggregation was achieved through binding of a single mercuric species between two thymine molecules on the surface of the nanoparticles. Both Hg²⁺ and MeHg⁺ caused a significant change in the visible absorbance spectrum, resulting in a colour change from red to blue. Significantly, the two mercuric species produced different hues of blue, distinguishable by eye. This method could lead to the development of a method for tandem detection of Hg²⁺ and MeHg⁺ in environmental samples.

Original language	English
Pages (from-to)	2088-2091
Number of pages	4
Journal	ChemistrySelect
Volume	3
Issue number	7
DOIs	https://doi.org/10.1002/slct.201702572
Publication status	Published - 21 Feb 2018

Keywords

colorimetric assay
gold nanoparticle
mercury(II)
methyl mercury
thymine

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10.1002/slct.201702572

Cite this

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title = "Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury",

abstract = "A method for temperature-dependent sensing of both inorganic mercury (Hg2+) and organic methyl mercury (MeHg+) with the same gold nanoparticle (AuNP) system was achieved. The AuNPs were functionalised with a thymine moiety and aggregation was achieved through binding of a single mercuric species between two thymine molecules on the surface of the nanoparticles. Both Hg2+ and MeHg+ caused a significant change in the visible absorbance spectrum, resulting in a colour change from red to blue. Significantly, the two mercuric species produced different hues of blue, distinguishable by eye. This method could lead to the development of a method for tandem detection of Hg2+ and MeHg+ in environmental samples.",

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AU - Aulsebrook, Margaret L.

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AU - Graham, Bim

AU - Tuck, Kellie L.

PY - 2018/2/21

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AB - A method for temperature-dependent sensing of both inorganic mercury (Hg2+) and organic methyl mercury (MeHg+) with the same gold nanoparticle (AuNP) system was achieved. The AuNPs were functionalised with a thymine moiety and aggregation was achieved through binding of a single mercuric species between two thymine molecules on the surface of the nanoparticles. Both Hg2+ and MeHg+ caused a significant change in the visible absorbance spectrum, resulting in a colour change from red to blue. Significantly, the two mercuric species produced different hues of blue, distinguishable by eye. This method could lead to the development of a method for tandem detection of Hg2+ and MeHg+ in environmental samples.

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KW - methyl mercury

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Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury

Abstract

Keywords

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Tags and algorithms for studies of protein structures and interactions

Expanding the molecular tool set for structural studies of proteins and their complexes

Monash Centre for Electron Microscopy (MCEM)

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Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury

Abstract

Keywords

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Projects

Tags and algorithms for studies of protein structures and interactions

Expanding the molecular tool set for structural studies of proteins and their complexes

Equipment

Monash Centre for Electron Microscopy (MCEM)

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