Fabrication of multilayered Au/silica/gadolinium compound core–shell particles and their imaging properties

Y. Kobayashi, Y. Shindo, T. Oikawa, M. Tokunaga, Y. Kubota, K. Gonda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The present work proposes a preparation method for multilayered Au nanoparticle/silica/gadolinium compound core–shell (Au/SiO2/GdC) particles. Silica-coated Au core–shell (Au/SiO2) particles with a size of 38.0 nm were prepared by a sol-gel reaction in the presence of the Au nanoparticles with a size of 15.5 nm. Multilayered Au/SiO2/GdC particles with sizes of ca. 35–52 nm were prepared by a homogeneous precipitation reaction in the presence of Au/SiO2 particles. The computed tomography (CT) value of the Au/SiO2/GdC colloid solution containing 4.3 × 10−2 M Au was 344.1 HU: Its converted CT value (CT divided by Au concentration) was as large as 8.0 × 103 HU/M. The r1 value of the Au/SiO2/GdC colloid solution was as large as 3.5 mM−1 s−1.

Original languageEnglish
Pages (from-to)963-970
Number of pages8
JournalMaterials Science and Technology (United Kingdom)
Volume33
Issue number8
DOIs
Publication statusPublished - 2017 May 24

Keywords

  • Au
  • Core–shell
  • Gadolinium
  • MRI
  • Multilayer
  • Particle
  • Silica
  • X-ray imaging

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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