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发表于 2009-8-10 12:59 | 只看该作者

[其他] J. Am. Chem. Soc. Hydrogen-Bonding Recognition-Induced Color Change of Gold Nanoparticles

2009: Ai Kelong; Liu Yanlan; Lu Lehui
Hydrogen-bonding recognition-induced color change of gold nanoparticles for visual detection of melamine in raw milk and infant formula.
Journal of the American Chemical Society 2009;131(27):9496-7.

The color change induced by triple hydrogen-bonding recognition between melamine and a cyanuric acid derivative grafted on the surface of gold nanoparticles can be used for reliable detection of melamine. Since such a color change can be readily seen by the naked eye, the method enables on-site and real-time detection of melamine in raw milk and infant formula even at a concentration as low as 2.5 ppb without the aid of any advanced instruments.

Hydrogen-Bonding Recognition-Induced Color Change of Gold Nanoparticles for Visual Detection of Melamine in Raw Milk and Infant Formula
Kelong Ai, Yanlan Liu and Lehui Lu*
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P.R. China
J. Am. Chem. Soc., 2009, 131 (27), pp 9496–9497
DOI: 10.1021/ja9037017
Publication Date (Web): June 18, 2009
Copyright © 2009 American Chemical Society
Abstract
The color change induced by triple hydrogen-bonding recognition between melamine and a cyanuric acid derivative grafted on the surface of gold nanoparticles can be used for reliable detection of melamine. Since such a color change can be readily seen by the naked eye, the method enables on-site and real-time detection of melamine in raw milk and infant formula even at a concentration as low as 2.5 ppb without the aid of any advanced instruments.

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