Monodispersed and size-controlled multibranched gold nanoparticles with nanoscale tuning of surface morphology

Nanoscale. 2011 May;3(5):2227-32. doi: 10.1039/c1nr10107b. Epub 2011 Apr 4.

Abstract

A novel seed-mediated synthetic route to produce multibranched gold nanoparticles is reported, in which it is possible to precisely tune both their size and nanostructuration, while maintaining an accurate level of monodispersion. The nanoscale control of surface nanoroughness/branching, ranging from small bud-like features to elongated spikes, allows to obtain fine tuning of the nanoparticle optical properties, up to the red and near-IR region of the spectrum. Such anisotropic nanostructures were demonstrated to be excellent candidates for SERS applications, showing significantly higher signals with respect to the standard spherical nanoparticles.

MeSH terms

  • Colloids / chemistry*
  • Gold / chemistry*
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Molecular Conformation
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Particle Size
  • Surface Properties

Substances

  • Colloids
  • Macromolecular Substances
  • Gold