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Fluoride-triggered ESPT in the binding with sal(oph)en.

Kai Liu1, Jianzhong Huo, Bolin Zhu

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Journal of Fluorescence
|May 17, 2012
PubMed
Summary
This summary is machine-generated.

This study shows that salophen acts as a colorimetric and fluorescent sensor for fluoride ions. Anion-induced changes enable selective detection, aiding in the development of new fluoride probes.

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Area of Science:

  • Coordination Chemistry
  • Analytical Chemistry
  • Supramolecular Chemistry

Background:

  • Salen ligands are versatile in metal coordination.
  • Anion sensing is crucial for various applications.
  • Developing selective and sensitive chemosensors is an ongoing challenge.

Purpose of the Study:

  • Investigate the anion binding and sensing capabilities of salen ligands.
  • Determine the mechanism of fluoride ion detection using salophen.
  • Explore the potential for designing new fluoride-selective probes.

Main Methods:

  • Synthesis and characterization of a salophen ligand.
  • Spectroscopic studies (colorimetric and fluorescent) for anion binding.
  • Analysis of anion-induced conformational changes and excited-state intramolecular proton transfer (ESPT).

Main Results:

  • Salophen demonstrated selective colorimetric and fluorescent sensing for fluoride ions (F(-)).
  • The sensing mechanism involves anion-induced conformational changes.
  • Excited-state intramolecular proton transfer (ESPT) plays a key role in the response.
  • A rapid response and noticeable optical changes were observed upon fluoride binding.

Conclusions:

  • Salophen is an effective chemosensor for fluoride ion detection.
  • The observed anion-sensing mechanism provides insights for designing novel F(-) probes.
  • This work contributes to the development of advanced analytical tools for fluoride monitoring.