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This study shows Mg-Al layered double hydroxides (LDHs) intercalated with quercetin exhibit altered structural and thermal properties. These quercetin-LDH hybrids demonstrate potential for targeted drug delivery applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Layered double hydroxides (LDHs) are versatile materials with tunable properties.
  • Quercetin is a natural flavonoid with known biological activities.
  • Developing novel drug delivery systems is crucial for effective therapeutics.

Purpose of the Study:

  • To synthesize and characterize Mg-Al LDHs intercalated with quercetin.
  • To investigate the structural, thermal, and morphological properties of these hybrids.
  • To evaluate the cytotoxic effects and potential biomedical applications of quercetin-LDH hybrids.

Main Methods:

  • Fourier transform infrared (FTIR) and Raman spectroscopy for structural confirmation.
  • X-ray diffraction (XRD) to determine interlayer spacing.
  • Thermogravimetric analysis (TGA) for thermal stability assessment.
  • Atomic force microscopy (AFM) for morphological analysis.
  • Cytotoxicity assays on NIH/3T3 and Saos-2 cell lines.
  • Reactive oxygen species (ROS) assays.

Main Results:

  • Successful intercalation of quercetin into Mg-Al LDHs confirmed by FTIR, Raman, and XRD.
  • Increased interlayer spacing and enhanced thermal degradation observed in quercetin-LDH hybrids.
  • AFM revealed morphological changes, including larger surface clusters.
  • Quercetin-LDH hybrids showed dose- and time-dependent cytotoxicity.
  • Quercetin exhibited differential cytotoxic effects on NIH/3T3 and Saos-2 cells.
  • Distinct ROS generation patterns were observed.

Conclusions:

  • Quercetin-intercalated Mg-Al LDHs possess unique structural and thermal characteristics.
  • These hybrids demonstrate promising cytotoxic properties for potential biomedical applications.
  • The findings support the development of quercetin-LDH hybrids for targeted drug delivery systems.