Highly selective fluorescence detection of Pd2+/4+ species based on a catalyzed aromatic Claisen rearrangement

Abstract

A highly selective chemodosimeter based on 1,8-naphthalimide for Pd^2+/4+ species via a Claisen rearrangement was developed, which not only discriminated Pd from competing Pt species, but also distinguished Pd in an oxidized state without altering its oxidation states from Pd⁰. Under optimized reaction conditions, the detection limit can reach 1.4 μM for Pd²⁺.