Preparation and properties of bifunctional Gd2O3/GQD composite nanoparticles

The results show that the synthesized particles Gd2O3/graphene quantum dots are spherical with a diameter of approximately 40 nm and have excellent fluorescence and magnetic property, and its relaxation rate is higher than that of the typical commercial contrast agents Gd-DTPA

Chengjie Xu; Meigui Ou; Hao Zhou; Chunlin Yang

2021

Scholarcy highlights

  • Nanocomposites of graphene quantum dots modified gadolinium oxide particles were successfully synthesized
  • The structures and properties of nanoparticles were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, photoluminescence spectrometry, and magnetic resonance imaging
  • The results show that the synthesized particles Gd2O3/GQD are spherical with a diameter of approximately 40 nm and have excellent fluorescence and magnetic property, and its relaxation rate is higher than that of the typical commercial contrast agents Gd-DTPA
  • The fluorescence property of Gd2O3/GQD is optimized by varying the VGQDs:VGd2O3 ratio, and 1:1 ratio of VGQDs:VGd2O3 results in the best fluorescence property
  • Gd2O3/GQD nanoparticles are composed of GQDs wrapped in Gd2O3 particles
  • The excellent biological compatibility and fluorescence properties of GQDs make the surface of Gd2O3/GQD nanoparticles emit blue-green light
  • The groups on the surface are conducive to binding with small biological molecules to realize the application of drug carriers and targeted drug delivery

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