Highly Sensitive and Selective Recognition of Zn⁺ and Fe⁺ Ions Using a Novel Thiophene-Derived Hydrazone Dual Fluorometric Sensor.

The selective detection of Zn⁺ and Fe⁺ ions is critical in environmental and biological studies. Schiff base chemosensors hold promise, but exploration of thiophene-derived variants remains limited. This work introduces a novel thiophene-derived Schiff base sensor (TBH), synthesized through the condensation reaction of thiophene-2-carboxaldehyde with benzil-bis-hydrazone, for the selective detection of Zn⁺ and Fe⁺ ions.