Gold nanoparticle self-assembly in saturated phospholipid monolayers

Alina Mogilevsky, Roman Volinsky, Yohai Dayagi, Noa Markovich, Raz Jelinek

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Self-assembly of nanostructures on surfaces is a promising area in the emerging field of "bottom-up nanolithography". We describe a systematic analysis of hydrophobically capped gold nanoparticle (Au NP) assemblies created within monolayers of saturated phospholipids deposited at the air/water interface. We show that the Au NPs are segregated within the mixed monolayers, forming distinct configurations. Microscopy analysis reveals that organized Au NP aggregates, including wires, rings, and "doughnut- shape" structures, are observed only within condensed-phase monolayers comprising phospholipids exhibiting longer acyl side-chains. In these monolayers, the Au NPs are localized at the edges of the condensed phospholipid domains. In addition to the pronounced effect of the phospholipid phases at the air/water interface, NP organization was found to depend upon the hydrophobic capping agents of the particles. The Au nanostructures assembled at the air/water interface can be transferred onto solid substrates, suggesting that the selfassembly monolayer approach could be exploited for practical nanoelectronic and sensing applications.

Original languageEnglish
Pages (from-to)7893-7898
Number of pages6
Issue number11
StatePublished - 1 Jun 2010

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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