TY - JOUR
T1 - Micelle-directed chiral seeded growth on anisotropic gold nanocrystals
AU - González-Rubio, Guillermo
AU - Mosquera, Jesús
AU - Kumar, Vished
AU - Pedrazo-Tardajos, Adrián
AU - Llombart, Pablo
AU - Solís, Diego M.
AU - Lobato, Ivan
AU - Noya, Eva G.
AU - Guerrero-Martínez, Andrés
AU - Taboada, José M.
AU - Obelleiro, Fernando
AU - MacDowell, Luis G.
AU - Bals, Sara
AU - Liz-Marzán, Luis M.
PY - 2020/6/26
Y1 - 2020/6/26
N2 - Surfactant-assisted seeded growth of metal nanoparticles (NPs) can be engineered to produce anisotropic gold nanocrystals with high chiroptical activity through the templating effect of chiral micelles formed in the presence of dissymmetric cosurfactants. Mixed micelles adsorb on gold nanorods, forming quasihelical patterns that direct seeded growth into NPs with pronounced morphological and optical handedness. Sharp chiral wrinkles lead to chiral plasmon modes with high dissymmetry factors (~0.20). Through variation of the dimensions of chiral wrinkles, the chiroptical properties can be tuned within the visible and near-infrared electromagnetic spectrum. The micelle-directed mechanism allows extension to other systems, such as the seeded growth of chiral platinum shells on gold nanorods. This approach provides a reproducible, simple, and scalable method toward the fabrication of NPs with high chiral optical activity.
AB - Surfactant-assisted seeded growth of metal nanoparticles (NPs) can be engineered to produce anisotropic gold nanocrystals with high chiroptical activity through the templating effect of chiral micelles formed in the presence of dissymmetric cosurfactants. Mixed micelles adsorb on gold nanorods, forming quasihelical patterns that direct seeded growth into NPs with pronounced morphological and optical handedness. Sharp chiral wrinkles lead to chiral plasmon modes with high dissymmetry factors (~0.20). Through variation of the dimensions of chiral wrinkles, the chiroptical properties can be tuned within the visible and near-infrared electromagnetic spectrum. The micelle-directed mechanism allows extension to other systems, such as the seeded growth of chiral platinum shells on gold nanorods. This approach provides a reproducible, simple, and scalable method toward the fabrication of NPs with high chiral optical activity.
KW - metal nanoparticles
KW - seeded growth
KW - chiral micelles
UR - http://www.scopus.com/inward/record.url?scp=85087142034&partnerID=8YFLogxK
U2 - 10.1126/science.aba0980
DO - 10.1126/science.aba0980
M3 - Article
C2 - 32587018
AN - SCOPUS:85087142034
VL - 368
SP - 1472
EP - 1477
JO - Science
JF - Science
SN - 0036-8075
IS - 6498
ER -