Cu2+-selective ratiometric and "off-on" sensor based on the rhodamine derivative bearing pyrene group

Abstract

A new rhodamine-based derivative bearing a pyrene group (PRC) was synthesized as a ratiometric and "off-on" chemosensor for Cu 2+. PRC displayed a selective and chelation enhanced ratiometric fluorescence change and colorlmetric change with Cu2- among the metal ions examined. © 2009 American Chemical Society.