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 | |
| Publication status | Published - 21 Feb 2018 |
Keywords
- colorimetric assay
- gold nanoparticle
- mercury(II)
- methyl mercury
- thymine
Cite this
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Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury. / Aulsebrook, Margaret L.; Watkins, Ethan; Grace, Michael R.; Graham, Bim; Tuck, Kellie L.
In: ChemistrySelect, Vol. 3, No. 7, 21.02.2018, p. 2088-2091.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Modified Gold Nanoparticles for the Temperature-Dependent Colorimetric Detection of Mercury and Methylmercury
AU - Aulsebrook, Margaret L.
AU - Watkins, Ethan
AU - Grace, Michael R.
AU - Graham, Bim
AU - Tuck, Kellie L.
PY - 2018/2/21
Y1 - 2018/2/21
N2 - 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.
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.
KW - colorimetric assay
KW - gold nanoparticle
KW - mercury(II)
KW - methyl mercury
KW - thymine
UR - http://www.scopus.com/inward/record.url?scp=85042421103&partnerID=8YFLogxK
U2 - 10.1002/slct.201702572
DO - 10.1002/slct.201702572
M3 - Article
VL - 3
SP - 2088
EP - 2091
JO - ChemistrySelect
JF - ChemistrySelect
SN - 2365-6549
IS - 7
ER -