Naphthylamine–Rhodamine-Based Ratiometric Fluorescent Probe for the Determination of Pd²⁺ Ions

Abstract

A naphthylamine–rhodamine hybrid ratiometric and colorimetric fluorescent probe (<b>RN</b>) was designed and synthesized. <b>RN</b> can identify Pd²⁺ ions with high selectivity and sensitivity. Furthermore, the probe can be used to monitor Pd²⁺ ions in live mice by fluorescence imaging