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<p>In this work, a new fluorescent sensor for detecting Cu<sup>2 +</sup> was developed based on the Rhodamine derivative. It displayed strong fluorescence enhancement upon the addition of Cu<sup>2+</sup>, and other common metal ions do not significantly affect the optical properties of the sensor. This optical signal change caused solely by Cu<sup>2 +</sup> is due to the opening of the lactone amide spiro ring structure, resulting in fluorescence emission. This specific recognition endows the sensor with the ability to qualitatively and quantitatively detect Cu<sup>2+</sup>, and the conclusion was also verified through density functional theory calculations. Simultaneously, the cell imaging and zebrafish experiments proved the potential application value in biological systems.</p>

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A Novel Rhodamine-Based Fluorescent Sensor for Detection of Cu2+

  • 期刊论文

  • 发表日期：

    2025年1月15日

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  • Fangfang Liu,
  • Chen Zhou,
  • Yue Hou,
  • Huan Zhang,
  • Jing Sun

摘要

In this work, a new fluorescent sensor for detecting Cu2 + was developed based on the Rhodamine derivative. It displayed strong fluorescence enhancement upon the addition of Cu2+, and other common metal ions do not significantly affect the optical properties of the sensor. This optical signal change caused solely by Cu2 + is due to the opening of the lactone amide spiro ring structure, resulting in fluorescence emission. This specific recognition endows the sensor with the ability to qualitatively and quantitatively detect Cu2+, and the conclusion was also verified through density functional theory calculations. Simultaneously, the cell imaging and zebrafish experiments proved the potential application value in biological systems.