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

Gabriele Maiorano, Loris Rizzello, Maria Ada Malvindi, Sangaru Shiv Shankar, Luigi Martiradonna, Andrea Falqui, Roberto Cingolani, Pier Paolo Pompa

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)2227-2232
Number of pages6
JournalNanoscale
Volume3
Issue number5
DOIs
StatePublished - May 2011
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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