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<p>A series of Eu<sup>3+</sup> doped manganese phosphite (JIS-10:Eu<sup>3+</sup>) red phosphors was prepared <i>via</i> the hydrothermal method. The regulation of Eu<sup>3+</sup> doping concentration on the material structure, luminescence properties, and antibiotic fluorescence sensing characteristics was systematically investigated. Experiments showed that when the Eu<sup>3+</sup> doping concentration (molar fraction) was 0.01, the material exhibited the strongest red emission at 617 nm. Under near-ultraviolet excitation at 394 nm, the luminescence intensity of JIS-10:0.01Eu<sup>3+</sup> showed a linear relationship with the Eu<sup>3+</sup> concentration. When this material was used as a fluorescent probe for tetracycline detection, its fluorescence intensity exhibited a good linear response to tetracycline concentration in the range of 0.1–200 µmol/L, and it showed significant selectivity towards structural analogs, such as sulfadiazine and norfloxacin.</p>

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Controllable Synthesis of JIS-10:Eu3+ Red Phosphor and Performance Optimization of Fluorescent Probe for Antibiotic Detection

  • 期刊论文

  • 发表日期：

    2025年9月17日

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  • Xinyuan Zhang,
  • Xiaoyu Cai,
  • Wenhang Guo,
  • Tan Su,
  • Zhongmin Su

摘要

A series of Eu3+ doped manganese phosphite (JIS-10:Eu3+) red phosphors was prepared via the hydrothermal method. The regulation of Eu3+ doping concentration on the material structure, luminescence properties, and antibiotic fluorescence sensing characteristics was systematically investigated. Experiments showed that when the Eu3+ doping concentration (molar fraction) was 0.01, the material exhibited the strongest red emission at 617 nm. Under near-ultraviolet excitation at 394 nm, the luminescence intensity of JIS-10:0.01Eu3+ showed a linear relationship with the Eu3+ concentration. When this material was used as a fluorescent probe for tetracycline detection, its fluorescence intensity exhibited a good linear response to tetracycline concentration in the range of 0.1–200 µmol/L, and it showed significant selectivity towards structural analogs, such as sulfadiazine and norfloxacin.