Luis Liz-Marzán
Biography:
Luis Liz-Marzán is a PhD in Chemistry by the University of Santiago de Compostela (1992). After a postdoc at Utrecht Unviersity and a long academic career at the University of Vigo, he is currently an Ikerbasque Professor at CIC biomaGUNE (San Sebastian, Spain), of which he has been Scientific Director (2013-2021). Co-author of over 500 scientific papers and 9 patents, Liz-Marzán is recognized for seminal contributions to colloidal synthesis of metal nanoparticles, self-assembly, nanoplasmonics, surface-enhanced Raman scattering and biomedical applications.
More information at www.bionanoplasmonics.com
Plenary presentation:
From Anisotropy to Asymmetry in Gold Nanoparticles
The field of chirality has seen a strong rejuvenation due to the observation of nanoscale chirality in plasmonic nanoparticles [1,2]. This lecture will highlight recent advances in the field of plasmonic chirality, including novel methods for the synthesis of optically active plasmonic nanomaterials. Although much research in this field has been related to chiral nanostructures formed by the directed self-assembly of gold nanorods on various chiral templates, recent work has demonstrated the possibility of employing the well-known seeded-growth method to endow colloidal nanoparticles with chiral features. A novel approach will be introduced, comprising the self-organization of surfactant micelles into chiral structures on nanoparticle seeds. This simple concept opens a wide range of possibilities, by playing around with the huge variety of chiral co-surfactants, seed morphologies and metal compositions, which have been studied in the context of the seeded-growth of metal nanoparticles. We demonstrate that the addition of chiral co-surfactants leads to supramolecular interactions with CTAC, resulting in chiral helices that can wrap gold nanocrystals and template the seeded growth into chiral features. The resulting chiral nanoparticle colloids display high morphological and optical handedness, which can be tuned through the visible and the near IR. This approach provides a reproducible, simple and scalable method toward the fabrication of nanoparticles with high chiral optical activity [3]”.
[1] D. Vila-Liarte, N.A. Kotov, L.M. Liz-Marzán, Template-Assisted Self-Assembly of Achiral Plasmonic Nanoparticles into Chiral Structure. Chem. Sci. 2022, 13, 595-610.
[2] G. Zheng, J. He, V. Kumar, S. Wang, I. Pastoriza-Santos, J. Pérez-Juste, L.M. Liz-Marzán, K.-Y. Wong, Discrete Metal Nanoparticles with Plasmonic Chirality. Chem. Soc. Rev. 2021, 50, 3738-3754
[3] 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.