%0 Journal Article
%T A Ferrocene-Quinoxaline Derivative as a Highly Selective Probe for Colorimetric and Redox Sensing of Toxic Mercury(II) Cations
%A Fabiola Zapata
%A Antonio Caballero
%A Pedro Molina
%A Alberto Tarraga
%J Sensors
%D 2010
%I MDPI AG
%R 10.3390/s101211311
%X A new chemosensor molecule 3 based on a ferrocene-quinoxaline dyad recognizes mercury (II) cations in acetonitrile solution. Upon recognition, an anodic shift of the ferrocene/ferrocenium oxidation peaks and a progressive red-shift (¦¤¦Ë = 140 nm) of the low-energy band, are observed in its absorption spectrum. This change in the absorption spectrum is accompanied by a colour change from orange to deep green, which can be used for a ¡°naked-eye¡± detection of this metal cation.
%K ferrocene
%K quinoxaline
%K mercury
%K electrochemistry
%K UV-vis spectroscopy
%U http://www.mdpi.com/1424-8220/10/12/11311