Highly sensitive gold nanoparticle-based colorimetric sensing of mercury(II) through simple ligand exchange reaction in aqueous Media

Yang Rae Kim; Rakesh Kumar Mahajan; Jong Seung Kim; Hasuck Kim

doi:10.1021/am9006963

Highly sensitive gold nanoparticle-based colorimetric sensing of mercury(II) through simple ligand exchange reaction in aqueous Media

Yang Rae Kim, Rakesh Kumar Mahajan, Jong Seung Kim, Hasuck Kim

Research output: Contribution to journal › Article

103 Citations (Scopus)

Abstract

A strategy for the rational design of a novel colorimetric sensor based on dithioerythritol-modified gold nanoparticles for the selective recognition of Hg²+ in aqueous media is presented. This approach relies on the combination of gold nanoparticles with Hg²+ through sulfur-Hg ²+-sulfur interaction. The gold nanoparticles showed high selectivity toward Hg²+ with binding-induced red shift in the absorption spectra, with no response to major interfering cations such as Pb ²⁺,Cd²⁺, and Cu²⁺ in the presence of ethylenediamine tetraacetic acid. The system responds to Hg²+ with a detection limit of 100 nM and might open a new avenue for the development of Hg²+ sensing probes.

Original language	English
Pages (from-to)	292-295
Number of pages	4
Journal	ACS Applied Materials and Interfaces
Volume	2
Issue number	1
DOIs	https://doi.org/10.1021/am9006963
Publication status	Published - 2010 Jan 27

Keywords

Colorimetric
Dithioerythritol
Gold nanoparticles
Ligand exchange
Mercury

ASJC Scopus subject areas

Materials Science(all)

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10.1021/am9006963

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Kim, Y. R., Mahajan, R. K., Kim, J. S., & Kim, H. (2010). Highly sensitive gold nanoparticle-based colorimetric sensing of mercury(II) through simple ligand exchange reaction in aqueous Media. ACS Applied Materials and Interfaces, 2(1), 292-295. https://doi.org/10.1021/am9006963

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