Synthesis and bio-functionalization of multifunctional magnetic Fe 3O4@Y2O3: Eu nanocomposites

Zhi Ya Ma, Dosi Dosev, Mikaela Nichkova, Shirley J. Gee, Bruce D. Hammock, Ian M. Kennedy

Research output: Contribution to journalArticlepeer-review

122 Scopus citations


A facile homogenous precipitation method has been developed for the synthesis of multifunctional, magnetic, luminescent nanocomposites with Fe 3O4 nanoparticles as the core and europium-doped yttrium oxide (Y2O3:Eu) as the shell. The nanocomposites showed both super-paramagnetic behavior and unique europium fluorescence properties with high emission intensity. Their surface has been modified with a bifunctional ligand, p-aminobenzoic acid (PABA), and further biofunctionalized with biotin; the nanocomposites showed specific targeting for avidin-coupled polystyrene beads.

Original languageEnglish (US)
Pages (from-to)4695-4700
Number of pages6
JournalJournal of Materials Chemistry
Issue number27
StatePublished - 2009

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)


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