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Area of Science:

  • Nanotechnology
  • Analytical Chemistry
  • Biomedical Imaging

Background:

  • Fluorocarbons offer biocompatibility and unique surface properties for analytical applications.
  • Mass spectrometry imaging (MSI) benefits from surface coatings that aid analyte desorption and ionization.
  • Gold nanoparticles (AuNPs) are valuable for multimodal imaging due to their contrast properties.

Purpose of the Study:

  • To develop novel fluorinated gold nanoparticles (f-AuNPs) for advanced nanostructure imaging mass spectrometry.
  • To leverage f-AuNPs for enhanced desorption and ionization of analytes in MSI.
  • To integrate f-AuNPs into a multimodal imaging strategy combining molecular and anatomical information.

Main Methods:

  • Synthesis of fluorinated gold nanoparticles (f-AuNPs).
  • Utilizing f-AuNPs as a nanostructured surface coating for MSI.
  • Employing laser irradiation to trigger fluorocarbon ligand release and analyte desorption.
  • Infusing f-AuNPs into tissues via fluorocarbon liquids for multimodal imaging.

Main Results:

  • f-AuNPs facilitate mass spectrometry analysis of both lipophilic and polar metabolites.
  • Irradiation of f-AuNPs effectively releases fluorocarbon ligands, driving analyte desorption.
  • AuNPs serve as effective contrast agents for X-ray microtomography and electron microscopy.
  • Successful multimodal imaging combining molecular and anatomical data was achieved.

Conclusions:

  • Fluorinated gold nanoparticles are a promising tool for enhancing mass spectrometry imaging.
  • The developed f-AuNPs enable sensitive analysis of diverse metabolites.
  • The integration of f-AuNPs into fluorocarbon liquids facilitates multimodal tissue imaging.