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Fluorescence array sensor based on lanthanide complex for pattern recognition detection of fluoroquinolone

Ying Li1, Xin Shi1, Hua Min2

  • 1School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.

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|August 30, 2024
PubMed
Summary

This study developed a novel fluorescence sensor array using terbium (Tb3+) and europium (Eu3+) complexes for detecting fluoroquinolone antibiotics. The sensor array effectively differentiates and quantifies these antibiotic residues in real samples.

Keywords:
Fluorescent sensingFluoroquinolonesLanthanide-based sensor array antibioticsPattern recognition

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Environmental Science

Background:

  • Fluoroquinolone antibiotics are widely used in human and animal health, leading to environmental contamination and potential health risks via bioaccumulation.
  • Rapid and precise detection of trace fluoroquinolone antibiotics in various matrices is crucial for environmental and human safety.
  • Existing detection methods may lack the sensitivity or specificity required for complex samples.

Purpose of the Study:

  • To develop a novel fluorescence sensor array for the sensitive and selective detection of fluoroquinolone antibiotics.
  • To utilize dual-emission terbium (Tb3+) and europium (Eu3+) complexes for signal generation.
  • To demonstrate the array's capability in differentiating and quantifying fluoroquinolone residues in real-world samples.

Main Methods:

  • Synthesis of dual-emission Tb3+/Eu3+ complexes.
  • Construction of a fluorescence sensor array based on the fluorescence intensity ratio (F1/F2) of the two emission centers.
  • Evaluation of the sensor array's performance in differentiating and quantifying fluoroquinolone antibiotics in various sample types.

Main Results:

  • The fluorescence sensor array successfully differentiated five fluoroquinolone antibiotics from two others based on their distinct sensitization effects on the lanthanide complexes.
  • The array demonstrated effective detection of fluoroquinolone antibiotics in real environmental and biological samples.
  • The developed method exhibited excellent qualitative and quantitative analysis capabilities for fluoroquinolone residues.

Conclusions:

  • The Tb3+/Eu3+ complex-based fluorescence sensor array offers a reliable and practical approach for detecting fluoroquinolone antibiotic residues.
  • This strategy provides a novel perspective for antibiotic residue analysis and highlights new opportunities for lanthanide complex applications in sensor arrays.
  • The sensor's ability to analyze complex samples underscores its potential for environmental monitoring and food safety applications.