Tuning Chemical Interface Damping: Competition between Surface Damping Pathways in Amalgamated Gold Nanorods Coated with Mesoporous Silica Shells.

ABSTRACT: The mechanism of mercury (Hg) amalgamation in gold nanorods coated with a mesoporous silica shell (AuNRs@mSiO₂) and the effect of chemical treatments on the localized surface plasmon resonance (LSPR) spectral changes in single amalgamated AuNRs@mSiO₂ remains unclear. In this study, we investigated Hg amalgamation and inward Hg diffusion in single AuNRs@mSiO₂ without structural deformation via dark-field scattering spectroscopy and X-ray photoelectron spectroscopy. Then, we investigated the chemisorption of thiol molecules on single amalgamated AuNRs@Hg-mSiO₂. Unlike previous studies on single AuNRs, the thiolation on single AuNRs@Hg-mSiO₂ resulted in a redshift and line width narrowing of the LSPR pea

SUBMITTER: Alizar YY 

PROVIDER: S-EPMC10685437 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature