{111} ‐ Faceted Silver Nanoplates: An Automated and Customized Design for Functionality

PISTONESI, BELÉN; BELÉN, FEDERICO; CENTURIÓN, MARÍA EUGENIA; SICA, MARÍA GABRIELA; RUSO, JUAN MANUEL; MESSINA, PAULA VERONICA

ChemNanoMat

Wiley-VCH GmbH, Weinheim

Lugar: Weinheim; Año: 2023 p. 1 - 10

2199-692X

Silver nanoparticles (Ag-NPs) exhibit the highest efficiency of localized surface plasmon resonance (LSPR) excitation that can be tuned to any wave length in the visible spectrum. Its performance depends to a large extent on its physicochemical characteristics such as size and shape; which, in turn, can be modulated by the selective growth of their crystalline facets.We used a simple direct chemical reduction method with a precise manipulation of seed-mediated growth control through an automated single-phase continuous flow-batch system to induce customized geometries on Ag-NPs. Optimization of the experimental design was carried out from a multivariate analysis, where the height/width ratio of LSPR band was used as response signal. Proposed methodology controls the critical steps in the synthesis of Ag-NPs that modulate their morphology to attain customized surface plasmon resonance in an interval of 380 nm (spherical-shaped nanoparticles) to 925 nm ({111}- faceted prism-shaped nanoplates) absorptions, leadingto a versatile platform to extend their potential applications.Although the present work focused on silver nanoparticles, we believe that this methodology can be extended to any free electron metals.