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 journalArticle

3 Citations (Scopus)

Abstract

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
Volume257
Issue number7
DOIs
Publication statusPublished - 2011

Keywords

  • Phospholipid
  • Self-assembly
  • Spin-coating

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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    Kim, J. H., Song, A. Y., Kwon, D. H., An, H. H., Ahnn, H. S., Kim, Y. K., & Yoon, C. S. (2011). Phospholipid-driven long-range ordering of Fe 3 O 4 nanoparticles Applied Surface Science, 257(7), 3128-3134. https://doi.org/10.1016/j.apsusc.2010.10.128