Issue 35, 2008
From the journal:

Dalton Transactions

Colorimetric response to mercury-induced abstraction of triethylene glycolligands from a gold nanoparticle surface†

Tasuku Hirayama,a   Masayasu Taki,*ab   Yukiyasu Kashiwagi,c   Masami Nakamoto,c   Atsushi Kunishita,d   Shinobu Itohd  and  Yukio Yamamotoa  

* Corresponding authors

a Graduate School of Human & Environmental Studies, Kyoto University, Yoshida, Sakyo-ku, Kyoto, Japan
E-mail: taki@chem.mbox.media.kyoto-u.ac.jp
Fax: +81-75-753-6833
Tel: +81-75-753-7871

b Graduate School of Global Environmental Studies, Kyoto University, Yoshida, Sakyo-ku, Kyoto, Japan

c Osaka Municipal Technical Research Institute, 1-6-50 Morinomiya, Osaka, Joto-ku, Japan

d Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, Japan

Abstract

A simple method for specific colorimetric sensing of aqueous mercury(II) has been developed by using a gold nanoparticle supported by triethylene glycol ligand (Au:S–EG3). The unusual kinetic behavior of the sensing process of Hg2+ and the TEM images of the Au core, as well as the electrospray ionization mass spectroscopic analysis of the analyte solution, have led us to propose a new color changing mechanism that involves ligand abstraction from a gold surface by Hg2+.

Graphical abstract: Colorimetric response to mercury-induced abstraction of triethylene glycol ligands from a gold nanoparticle surface

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Article information

DOI
https://doi.org/10.1039/B808433E
Article type
Communication
Submitted
19 May 2008
Accepted
02 Jul 2008
First published
22 Jul 2008

Dalton Trans., 2008, 4705-4707

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Colorimetric response to mercury-induced abstraction of triethylene glycol ligands from a gold nanoparticle surface

T. Hirayama, M. Taki, Y. Kashiwagi, M. Nakamoto, A. Kunishita, S. Itoh and Y. Yamamoto, Dalton Trans., 2008, 4705 DOI: 10.1039/B808433E

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