Effect of ligand shell structure on the interaction between monolayer-protected gold nanoparticles

Ying Hu, Oktay Uzun, Cedric Dubois, Francesco Stellacci

Research output: Contribution to journalArticle

Abstract

Here we present a comparative analysis of two types of equally monodisperse gold nanoparticles (∼8 nm in diameter), one coated only with dodecanethiol ligands and the other coated with a mixture of dodecanethiol and 4-methylbenzenethiol ligands. The former particles ('homoligand') have a homogeneous coating, while the latter ones ('rippled') show a striated structure composed of phase-separated ribbon-like domains of alternating composition. A combined scanning tunneling and transmission electron microscopy study shows that homoligand nanoparticles interdigitate into one another less than rippled particles and readily form hexagonally packed supracrystals, while rippled particles are trapped in more disordered 'glassy' arrangements.

Original languageEnglish
Pages (from-to)6279-6284
Number of pages6
JournalJournal of Physical Chemistry C
Volume112
Issue number16
DOIs
Publication statusPublished - Apr 24 2008

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Gold
Monolayers
Ligands
gold
Nanoparticles
nanoparticles
ligands
trapped particles
ribbons
interactions
Transmission electron microscopy
Scanning
coatings
Coatings
transmission electron microscopy
scanning
Chemical analysis
4-methylbenzenethiol

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Effect of ligand shell structure on the interaction between monolayer-protected gold nanoparticles. / Hu, Ying; Uzun, Oktay; Dubois, Cedric; Stellacci, Francesco.

In: Journal of Physical Chemistry C, Vol. 112, No. 16, 24.04.2008, p. 6279-6284.

Research output: Contribution to journalArticle

Hu, Ying ; Uzun, Oktay ; Dubois, Cedric ; Stellacci, Francesco. / Effect of ligand shell structure on the interaction between monolayer-protected gold nanoparticles. In: Journal of Physical Chemistry C. 2008 ; Vol. 112, No. 16. pp. 6279-6284.
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