Fig. 1: Schematic representation for the growth mechanisms of various helicoid NPs under chiral nanoconfinement. | Nature Communications

Fig. 1: Schematic representation for the growth mechanisms of various helicoid NPs under chiral nanoconfinement.

From: Enantioselective synthesis of chiroplasmonic helicoidal nanoparticles by nanoconfinement in chiral dielectric shells

Fig. 1

The chiral nanoconfinement strategy involves two distinct growth pathways: the shape-replicating pathway (blue) and the self-adjusting regioselective pathway (red). Depending on difference growth processes, helicoid Pt (green models) and Au@Pd NPs (blue models), which undergo polycrystalline growth and adhere to the shape-replicating pathway, follow Route I and Route II, respectively. Ag-based NPs undergo the self-adjusting regioselective pathway with faceted single-crystalline growth, which are subdivided into two routes with different crystal facets. When PVP serves as the stabilizer to promote the Ag {100} facets, helicoid Au@Ag NPs with a cubic profile (red models) follow the Route III. When CA is used as the stabilizer to promote the Ag {111} facets, helicoid Au@Ag NPs with an octahedral profile (purple models) follow the Route IV. The golden and translucent models represent the helicoid Au NPs and chiral SiO2 nanoshells, respectively.

Back to article page