An electroactive nitrogen-rich [4.4]ferrocenophane displaying redox-switchable behavior: Selective sensing, complexation, and decomplexation of Mg2+ ions

Abstract

A chameleonic, redox-switchable carrier molecule: A [4,4]ferrocenophane ligand can selectively recognize Mg2+ ions through complexation. This ligand can transport and release Mg2+ ions by application of an external electrochemical stimulus across a CH2Cl2 liquid membrane (see picture). Furthermore, dramatic color changes are seen, which allow the potential for "naked-eye" detection. (Chemical Equation Presented). © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.