Boosting the Analytical Properties of Gold Nanostars by Single Particle Confinement into Yolk Porous Silica Shells

María Blanco-Formoso, Ana Sousa-Castillo, Xiaofei Xiao, Andrea Mariño-López, Mariacristina Turino, Nicolas Pazos-Perez, Vincenzo Giannini, Miguel A. Correa-Duarte, and Ramon A. Alvarez-Puebla
Nanoscale (ASAP)

 

Herein we illustrate an effective protocol to boost the optical enhancing properties of gold nanostars. By coating single nanostars with a mesoporous silica layer of the appropriate size (Yolk capsules), to localize them under optical microscopy, it is possible to enumerate single particles and design SERS quantitative methods with minute amounts of metallic particles.

Nanoscale 2019