Chemically isolating hot spots on concave nanocubes

Matthew Rycenga, Mark R. Langille, Michelle L. Personick, Tuncay Ozel, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

We report a simple and general strategy for selectively exposing and functionalizing the sharp corners of concave nanocubes, which are the SERS hot spots for such structures. This strategy takes advantage of the unique shape of the concave cubes by coating the particles with silica and then etching it away to expose only the corner regions, while maintaining the silica coating in the concave faces. These corner regions can then be selectively modified for improved enhancement and signal response with SERS.

Original languageEnglish (US)
Pages (from-to)6218-6222
Number of pages5
JournalNano letters
Volume12
Issue number12
DOIs
StatePublished - Dec 12 2012

Keywords

  • Anisotropic nanoparticle
  • concave nanocube
  • hot spot
  • surface-enhanced Raman scattering

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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