<p>A novel coumarin-based fluorescent probe <b>LY</b> was designed and synthesized in this work. <b>LY</b> could selectively recognize Cu<sup>2+</sup> via fluorescence quenching at 522&#xa0;nm in a DMSO/H<sub>2</sub>O solution. The recognition process experienced minimal interference from other common cations. The binding ratio of <b>LY</b> to Cu<sup>2+</sup> was found to be 1:1, while the detection limit was calculated to be 4.6 × 10<sup>− 8</sup> M with the binding constant of 2.42 × 10<sup>6</sup> M<sup>− 1</sup>. Additionally, <b>LY</b> was effectively utilized for detecting Cu<sup>2+</sup> in real water samples and with test papers, demonstrating its applicability.</p>

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A Novel Coumarin Based Fluorescent Probe for Cu²⁺ Detection as well as Applications

  • Yunke Gao,
  • Linlong Deng,
  • Lei Xue,
  • Yihan Cheng,
  • Shuai Fu,
  • Haibin Wang

摘要

A novel coumarin-based fluorescent probe LY was designed and synthesized in this work. LY could selectively recognize Cu2+ via fluorescence quenching at 522 nm in a DMSO/H2O solution. The recognition process experienced minimal interference from other common cations. The binding ratio of LY to Cu2+ was found to be 1:1, while the detection limit was calculated to be 4.6 × 10− 8 M with the binding constant of 2.42 × 106 M− 1. Additionally, LY was effectively utilized for detecting Cu2+ in real water samples and with test papers, demonstrating its applicability.