A chalcone-based fluorescent chemosensor for detecting Mg2+ and Cd2.

Soyoung ParkBoeon SuhCheal Kim

Published in: Luminescence : the journal of biological and chemical luminescence (2021)

As a chalcone-based fluorescent turn-on chemosensor to Mg2+ and Cd2+ , SBOD (sodium (E)-2-(3-(5-bromothiophen-2-yl)-3-oxoprop-1-en-1-yl)-4,6-dichlorophenolate) was designed and synthesized. SBOD detected selectively Mg2+ and Cd2+ through effective fluorescence increase. Detection limits of SBOD for Mg2+ and Cd2+ were calculated to be 3.8 μM and 2.9 μM. The binding modes of SBOD for Mg2+ and Cd2+ were determined to be 1:1 by ESI-MS and Job plot. Association mechanisms of SBOD to Mg2+ and Cd2+ were illustrated by ESI-MS, UV-vis and fluorescent spectroscopy and calculations.

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