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 language | English (US) |
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Pages (from-to) | 6218-6222 |
Number of pages | 5 |
Journal | Nano letters |
Volume | 12 |
Issue number | 12 |
DOIs | |
State | Published - Dec 12 2012 |
Keywords
- Anisotropic nanoparticle
- concave nanocube
- hot spot
- surface-enhanced Raman scattering
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering