Enhanced control of plasmonic properties of silver-gold hollow nanoparticles via a reduction-assisted galvanic replacement approach.

ABSTRACT: Hollow noble metal nanoparticles are of growing interest due to their localized surface plasmon resonance (LSPR) tunability. A popular synthetic approach is galvanic replacement which can be coupled with a co-reducer. Here, we describe the control over morphology, and therefore over plasmonic properties including energy, bandwidth, extinction and scattering intensity, offered by co-reduction galvanic replacement. This study indicates that whereas the variation of atomic stoichiometry using the co-reduction method described in this work offers a rather modest tuning range of LSPR energy when compared to traditional galvanic replacement, it nevertheless has a profound effect on shell thickness, which imparts a degree of control over scattering intensity and sensitivity to changes in the diel

SUBMITTER: R Daniel J 

PROVIDER: S-EPMC9059334 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature