Au nanoparticles for SERS: Temperature-controlled nanoparticle morphologies and their Raman enhancing properties.

ABSTRACT: Quasi-fractal gold nanoparticles can be synthesized via a modified and temperature controlled procedure initially used for the synthesis of star-like gold nanoparticles. The surface features of nanoparticles lead to improved enhancement of Raman scattering intensity of analyte molecules due to the increased number of sharp surface features possessing numerous localized surface plasmon resonances (LSPR). The LSPR is affected by the size and shape of surface features as well as inter-nanoparticle interactions, as these affect the oscillation modes of electrons on the nanoparticle surfaces. The effect of the particle morphologies on the localized surface plasmon resonance (LSPR) and on the surface-enhancing capabilities of these nanoparticles is explored by comparing different nanoparticle mo

SUBMITTER: Darienzo RE 

PROVIDER: S-EPMC7665167 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature