A Fluorescence‐Enhanced Chemodosimeter for Fe³⁺ Based on Hydrolysis of Bis(coumarinyl) Schiff Base

Abstract

Abstract Bis(coumarinyl) Schiff base 1 was designed and synthesized as a fluorescence turn‐on chemodosimeter for Fe 3+ . The chemodosimeter was readily synthesized in four steps from 2,4‐dihydroxybenzaldehyde. The addition of Fe 3+ to chemodosimeter 1 induced about a 140‐fold enhancement influorescence. Furthermore, chemodosimeter 1 was also highly selective to Fe 3+ over other metal ions, and most of the related metals ions exhibited negligible detection interference.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)