对汞诱导从金纳米颗粒表面提取三甘醇配体的比色响应。

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

作者信息

Hirayama Tasuku, Taki Masayasu, Kashiwagi Yukiyasu, Nakamoto Masami, Kunishita Atsushi, Itoh Shinobu, Yamamoto Yukio

机构信息

Graduate School of Human & Environmental Studies, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan.

出版信息

Dalton Trans. 2008 Sep 21(35):4705-7. doi: 10.1039/b808433e. Epub 2008 Jul 22.

DOI:10.1039/b808433e

PMID:18728875

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-EG(3)). The unusual kinetic behavior of the sensing process of Hg(2+) 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 Hg(2+).

摘要

通过使用由三甘醇配体支撑的金纳米颗粒（Au:S-EG(3)），开发了一种用于比色法特异性检测水溶液中汞（II）的简单方法。Hg(2+)传感过程的异常动力学行为、金核的透射电子显微镜图像以及分析物溶液的电喷雾电离质谱分析，使我们提出了一种新的颜色变化机制，该机制涉及Hg(2+)从金表面夺取配体。