A simple and highly selective fluorescent sensor for palladium based on benzofuran-2-boronic acid

Add time:08/24/2019    Source:sciencedirect.com

Benzofuran-2-boronic acid could be used as a fluorescent sensor for the detection of Pd2+ because it was rapidly converted to highly fluorescent derivative after mixing with Pd2+ under basic condition at room temperature. We found that dimerization of benzofuran was occurred to form fluorescent derivative by the catalytic activity of palladium. The fluorescence intensity at 360 nm increased with increasing the concentration of Pd2+. The excellent selectivity for Pd2+ was demonstrated among other metal ions. Based on this findings, we successfully applied benzofuran-2-boronic acid to develop a microplate-based assay for high-throughput measurement of Pd2+. The detection limit (blank + 3SD) for Pd2+ of the proposed assay was 9.8 nM.

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