2026-06-27T15:46:43Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1289552025-12-16T01:15:43Zcom_20.500.14352_14col_20.500.14352_15

González Rubio, Guillermo Mosquera, Jesús Kumar, Vished Pedrazo Tardajos, Adrián Llombart, Pablo Solís, Diego M. Lobato, Iván G. Noya, Eva Guerrero Martínez, Andrés Taboada, José M. Obelleiro, Fernando González Mac-Dowell, Luis Bals, S. Liz Marzán, Luis M. 2025-12-15T11:53:37Z 2025-12-15T11:53:37Z 2020-06-26 G. González-Rubio, J. Mosquera, V. Kumar, A. Pedrazo-Tardajos, P. Llombart, D. M Solís, I. Lobato, E. G Noya, A. Guerrero-Martínez, J. M Taboada, F. Obelleiro, L. G MacDowell, S. Bals, L. M Liz-Marzán; Micelle-directed chiral seeded growth on anisotropic gold nanocrystals; Science 2020, 368, 1472–1477. 10.1126/science.aba0980 https://hdl.handle.net/20.500.14352/128955 https://doi.org/10.1126/science.aba0980 https://www.science.org/doi/10.1126/science.aba0980 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. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 International Micelle-directed chiral seeded growth on anisotropic gold nanocrystals journal article