J. Hong, Jae Kyeong Jun, Hong Yeong Kim
Sep 30, 2015
Citations
0
Influential Citations
15
Citations
Journal
Tetrahedron Letters
Abstract
Selective Cu 2+ signaling by the oxidative coupling of anilines with 4-aminoantipyrine was investigated. The Cu 2+ -assisted reaction between N -ethyl- N -(2-hydroxy-3-sulfopropyl)-3,5-dimethylaniline sodium salt and 4-aminoantipyrine resulted in the pronounced color change from colorless to bluish green, with a detection limit of 2.1 × 10 −6 M in 90% aqueous acetonitrile. Furthermore, selective Cu 2+ signaling was not affected by the presence of common metal ions as background. The practical utility of this system for the determination of Cu 2+ was successfully demonstrated using a convenient chromogenic test strip.