Phospholipid-driven long-range ordering of Fe 3 O 4 nanoparticles

Jung Hoon Kim, Ah Young Song, Dae Hoon Kwon, Hyeun Hwan An, Hyung Soo Ahnn, Young Keun Kim, Chong Seung Yoon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


N-(1-(2,3-dioleoyloxy)propyl)-N,N,N-trimethylammonium chloride (DOTAP) lipid molecules were used to drive the self-assembly of pre-fabricated Fe 3 O 4 nanoparticles (∼10 nm in size) into a tightly packed hexagonal array by spin coating. In spite of the relatively wide particle size distribution of the pre-fabricated nanoparticles, the nanoparticles encapsulated by the DOTAP lipid molecules were self-assembled into a two-dimensional superlattice over a large area because the monolayer of DOTAP molecules attached to the particles surface provided the force necessary to anchor the nanoparticles on the substrate surface during spin coating as well as the force necessary to hold the particles together. It is expected that the proposed method can be easily scalable to an industrial process and be also adapted to different nanoparticle systems by appropriate selection of the encapsulating lipid molecules.

Original languageEnglish
Pages (from-to)3128-3134
Number of pages7
JournalApplied Surface Science
Issue number7
Publication statusPublished - 2011

Bibliographical note

Funding Information:
This research was supported by a grant (code #: 2010K000356 ) from ‘ Center for Nanostructured Materials Technology ’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Education, Science and Technology, Korea.


  • Phospholipid
  • Self-assembly
  • Spin-coating

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • General Physics and Astronomy
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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