A chalcone‐based fluorescent chemosensor for detecting Mg<sup>2+</sup> and Cd<sup>2+</sup>
Soyoung Park, Boeon Suh, Cheal Kim
Abstract
Abstract SBOD (sodium (E)‐2‐(3‐[5‐bromothiophen‐2‐yl]‐3‐oxoprop‐1‐en‐1‐yl)‐4,6‐dichlorophenolate) was designed and synthesized as a chalcone‐based fluorescent turn‐on chemosensor for Mg 2+ and Cd 2+ . SBOD selectively detected Mg 2+ and Cd 2+ through the increase in effective fluorescence. Detection limits of SBOD for Mg 2+ and Cd 2+ were calculated to be 3.8 μM and 2.9 μM, respectively. The binding modes of SBOD for Mg 2+ and Cd 2+ were determined to be 1:1 by ESI‐MS and Job plot. Association mechanisms for SBOD to Mg 2+ and Cd 2+ were illustrated by ESI‐MS, UV–vis, fluorescence spectroscopy, and calculations.
Topics & Concepts
FluorescenceChalconeChemistryDetection limitNuclear chemistrySodiumPhotochemistryAnalytical Chemistry (journal)StereochemistryChromatographyOrganic chemistryPhysicsQuantum mechanicsMolecular Sensors and Ion DetectionElectrochemical Analysis and ApplicationsMetal complexes synthesis and properties