A reversible eugenol derived colorimetric and fluorescence "turn-off" probe for Fe²⁺ and Pb²⁺ ions detection.

ABSTRACT: A simple and robust colorimetric and fluorescent eugenol-based chemical sensor, namely, (E)-N'-(5-allyl-2-hydroxy-3-methoxybenzylidene)-2-hydroxybenzohydrazide (EABH) was synthesized and characterized using spectroscopic techniques such as, NMR (1H and 13C) and mass spectra. The chemosensor shows dual behavior for the colorimetric detection of Fe2+ and fluorometric detection of Pb2+ ions with high sensitivity and selectivity towards both the ions. The EABH detects Fe2+ by "naked eye" color change from lime yellow to brown and displayed fluorescence "Turn-off" response to Pb2+ ion. The binding stoichiometry of EABH based on absorption (for Fe2+) and fluorescence (for Pb2+) data along with mass spectral studies indicated 1:2 binding of metal to EABH ratio, which is further verified by Job's

SUBMITTER: Priya MJ 

PROVIDER: S-EPMC12379265 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature