Selective recognition of fumarate from maleate with a gold nanoparticle-based colorimetric sensing system
作者:Kyung-Seog Youk、Kyung Mi Kim、Amrita Chatterjee、Kyo Han Ahn
DOI:10.1016/j.tetlet.2008.03.142
日期:2008.5
A colorimetric sensing system of gold nanoparticles functionalized with carboxylate-binding units of o-(trifluoroacetyl)carboxanilide is described, which selectively recognizes a trans-dicarboxylate (fumarate) from its cis-isomer (maleate) and several dicarboxylates through inter-particle cross-linking, resulting in an apparent color change from red to purple. (C) 2008 Published by Elsevier Ltd.