Plasmonic properties of regiospecific core-satellite assemblies of gold nanostars and nanospheres

A. Swarnapali D S Indrasekara, Roney Thomas, Laura Fabris

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Solution-based molecularly-mediated bottom-up assembly of gold nanostars and nanospheres in regiospecific core-satellite nanoarchitectures is reported. The controlled assembly is driven by coupling reactions in solution between small, rigid, Raman-active organic molecules bound to the surface of the nanoparticles, and leads to much narrower interparticle gaps than achievable with DNA-based assembly methods. In the described system, gold nanostars with multiple sharp spikes, ideal for electromagnetic field enhancement, are used as the core particle onto which spherical satellites are assembled. Transmission electron micrographs show that the core-satellite structures assemble with

Original languageEnglish
Pages (from-to)21133-21142
Number of pages10
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number33
DOIs
Publication statusPublished - Oct 31 2014

Fingerprint

Nanospheres
Gold
assemblies
assembly
Satellites
gold
spikes
Electromagnetic fields
electromagnetic fields
deoxyribonucleic acid
Nanoparticles
nanoparticles
Molecules
Electrons
augmentation
DNA
molecules
electrons

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Plasmonic properties of regiospecific core-satellite assemblies of gold nanostars and nanospheres. / Indrasekara, A. Swarnapali D S; Thomas, Roney; Fabris, Laura.

In: Physical Chemistry Chemical Physics, Vol. 17, No. 33, 31.10.2014, p. 21133-21142.

Research output: Contribution to journalArticle

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