title: Chemically isolating hot spots on concave nanocubes.
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.
authors.affiliation: Department of Chemistry and International Institute of Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States.
authors.forename: Matthew
authors.initials: M
authors.lastname: Rycenga
authors.forename: Mark R
authors.initials: MR
authors.lastname: Langille
authors.forename: Michelle L
authors.initials: ML
authors.lastname: Personick
authors.forename: Tuncay
authors.initials: T
authors.lastname: Ozel
authors.forename: Chad A
authors.initials: CA
authors.lastname: Mirkin