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Functionalized infinite coordination polymers: A ratiometric fluorescence sensor for tetracycline detection.

Weifeng Hou1, Lin Lin1, Yuxin Sun1

  • 1Jiangxi Provincial Key Laboratory of Organic Functional Molecules; Institute of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China.

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A novel ratiometric fluorescence sensor using infinite coordination polymers (ICP) offers sensitive and reliable detection of tetracycline (TC). This advancement shows great potential for rapid and accurate food safety testing.

Keywords:
Infinite coordination polymer (ICP)Ratiometric fluorescence sensorTetracycline (TC)UiO-66-NH(2)

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Nanotechnology

Background:

  • Analytical method evaluation prioritizes sensitivity, reliability, and practicality.
  • Tetracycline (TC) detection requires selective and sensitive methods for food safety.

Purpose of the Study:

  • To develop a ratiometric fluorescence sensor for sensitive tetracycline (TC) detection.
  • To create a sensor with self-calibration properties and reduced background interference.

Main Methods:

  • Synthesized a composite material, UiO@Eu-ICP, by encapsulating UiO-66-NH2 into an infinite coordination polymer (ICP) matrix.
  • Utilized the dual-emission characteristics of UiO@Eu-ICP for ratiometric fluorescence detection.
  • Observed quenching of blue fluorescence and enhancement of red fluorescence upon TC binding.

Main Results:

  • The UiO@Eu-ICP sensor demonstrated high selectivity and sensitivity for TC detection.
  • Achieved a low detection limit of 17.6 nM and a rapid response time of under 10 seconds.
  • The ratiometric approach provided self-calibration and minimized background noise.

Conclusions:

  • The developed UiO@Eu-ICP ratiometric sensor is highly effective for sensitive TC detection.
  • This sensor exhibits significant potential for practical applications in food testing and safety analysis.