Modular assembly of plasmonic core-satellite structures as highly brilliant SERS-encoded nanoparticles

Identificador:  imarina:5874072

Handle: https://hdl.handle.net/20.500.11797/imarina5874072

Autors:  Pazos-Perez, Nicolas; Fitzgerald, Jamie M; Giannini, Vincenzo; Guerrini, Luca; Alvarez-Puebla, Ramon A

Resum:
© 2019 The Royal Society of Chemistry. Herein, we present a fabrication approach that produces homogeneous core-satellite SERS encoded particles with minimal interparticle gaps (<2-3 nm) and maximum particle loading, while positioning the encoding agents at the gaps. Integration of plasmonic building blocks of different sizes, shapes, compositions, surface chemistries or encoding agents is achieved in a modular fashion with minimal modification of the general synthetic protocol. These materials present an outstanding optical performance with homogeneous enhancement factors over 4 orders of magnitude as compared with classical SERS encoded particles, which allows their use as single particle labels.