Highly Selective and Sensitive Near-Infrared Fluorescent Sensors for Cadmium in Aqueous Solution

Abstract

On the basis of tricabocyanine, two near-infrared fluorescent sensors CYP-1 and CYP-2 have been designed and synthesized. Both of them can selectively and sensitively recognize Cd(2+) from other metal ions, especially the CYP-2, which can distinguish Cd(2+) in neutral buffer solution.