One-pot polyol synthesis of monosize PVP-coated sub-5 nm Fe3O4 nanoparticles for biomedical applications

Hong Ling Liu, Seung Pil Ko, Jun Hua Wu, Myung Hwa Jung, Ji Hyun Min, Ju Hun Lee, Boo Hyun An, Young Keun Kim

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)


Polyvinylpyrrolidone (PVP)-coated sub-5 nm monosize Fe3O4 nanoparticles were synthesized by reduction of Fe(III) acetylacetonate in the presence of PVP polymer as surfactant in one-pot polyol process. Their microstructure and magnetic properties were characterized by XRD, TEM/HRTEM and VSM. It is found that the nanoparticles have high crystallinity with distinct lattices and the magnetic measurements reveal their well-defined superparamagnetic behavior at room temperature. Such Fe3O4 nanoparticles with tailorable size and tunable magnetic properties are promising for biomedical applications.

Original languageEnglish
Pages (from-to)e815-e817
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 3
Publication statusPublished - 2007 Mar

Bibliographical note

Funding Information:
This work was supported by Korea Research Foundation Grants KRF-2004-005-D00057 and KRF-2005-210-D00023, Korea Health 21 R&D Project, Ministry of Health & Welfare (No. A050750), and Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MOST) (No. M60501000045-05A0100-04510).


  • FeO
  • Magnetic
  • Magnetite
  • Nanoparticle
  • Polyol synthesis
  • Ultrasmall size

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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