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A Pyrenylboronic Acid-based Fluorescence Sensor for Highly Efficient Detection of Mercury(II) Ions

효율적인 수은이온 검출을 위한 피렌-보론산 기반의 형광센서 개발

  • Received : 2019.12.30
  • Accepted : 2020.01.20
  • Published : 2020.02.29

Abstract

A new chemosensor based on a self-assembled system has been devised to detect Hg2+ions efficiently. We demonstrated that the amphiphilic building blocks consisting of pyrene and boronic acid (1) aggregate in aqueous solutions and provide an outstanding sensing platform for sensitive detection. The self-assembled 1 exhibited high selectivity and sensitivity for Hg2+ion detection via fluorescence quenching, where the Hg2+ion detection ensued from a fast transmetallation of 1. The Stern-Volmer (SV) quenching constant for its fluorescence quenching by Hg2+ions was approximately 1.58 × 108 M-1. In addition, self-assembled 1 exhibited excellent sensing abilities at nano-molar concentration levels when tap water and freshwater samples were contaminated with of Hg2+ ions.

Acknowledgement

Supported by : 한국연구재단

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