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Chiral Seeded Growth of Gold Nanorods Into Fourfold Twisted Nanoparticles with Plasmonic Optical Activity

  • Dades identificatives

    Identificador: imarina:9286992
    Autors:
    Ni BMychinko MGómez-Graña SMorales-Vidal JObelleiro-Liz MHeyvaert WVila-Liarte DZhuo XAlbrecht WZheng GGonzález-Rubio GTaboada JMObelleiro FLópez NPérez-Juste JPastoriza-Santos ICölfen HBals SLiz-Marzán LM
    Resum:
    A robust and reproducible methodology to prepare stable inorganic nanoparticles with chiral morphology may hold the key to the practical utilization of these materials. An optimized chiral growth method to prepare fourfold twisted gold nanorods is described herein, where the amino acid cysteine is used as a dissymmetry inducer. Four tilted ridges are found to develop on the surface of single-crystal nanorods upon repeated reduction of HAuCl4, in the presence of cysteine as the chiral inducer and ascorbic acid as a reducing agent. From detailed electron microscopy analysis of the crystallographic structures, it is proposed that the dissymmetry results from the development of chiral facets in the form of protrusions (tilted ridges) on the initial nanorods, eventually leading to a twisted shape. The role of cysteine is attributed to assisting enantioselective facet evolution, which is supported by density functional theory simulations of the surface energies, modified upon adsorption of the chiral molecule. The development of R-type and S-type chiral structures (small facets, terraces, or kinks) would thus be non-equal, removing the mirror symmetry of the Au NR and in turn resulting in a markedly chiral morphology with high plasmonic optical activity.
  • Altres:

    Autor segons l'article: Ni B; Mychinko M; Gómez-Graña S; Morales-Vidal J; Obelleiro-Liz M; Heyvaert W; Vila-Liarte D; Zhuo X; Albrecht W; Zheng G; González-Rubio G; Taboada JM; Obelleiro F; López N; Pérez-Juste J; Pastoriza-Santos I; Cölfen H; Bals S; Liz-Marzán LM
    Departament: Química Física i Inorgànica
    Autor/s de la URV: Lopez Alonso, Nuria / Morales Vidal, Jordi
    Paraules clau: amino-acid chiral seeded growth plasmonic optical activity shape control twisted nanoparticles wulff construction Au nanorods Chiral seeded growth Metal nanoparticles Plasmonic optical activity Twisted nanoparticles Wulff construction
    Resum: A robust and reproducible methodology to prepare stable inorganic nanoparticles with chiral morphology may hold the key to the practical utilization of these materials. An optimized chiral growth method to prepare fourfold twisted gold nanorods is described herein, where the amino acid cysteine is used as a dissymmetry inducer. Four tilted ridges are found to develop on the surface of single-crystal nanorods upon repeated reduction of HAuCl4, in the presence of cysteine as the chiral inducer and ascorbic acid as a reducing agent. From detailed electron microscopy analysis of the crystallographic structures, it is proposed that the dissymmetry results from the development of chiral facets in the form of protrusions (tilted ridges) on the initial nanorods, eventually leading to a twisted shape. The role of cysteine is attributed to assisting enantioselective facet evolution, which is supported by density functional theory simulations of the surface energies, modified upon adsorption of the chiral molecule. The development of R-type and S-type chiral structures (small facets, terraces, or kinks) would thus be non-equal, removing the mirror symmetry of the Au NR and in turn resulting in a markedly chiral morphology with high plasmonic optical activity.
    Àrees temàtiques: Astronomia / física Chemistry, multidisciplinary Chemistry, physical Engenharias ii Engenharias iii Engenharias iv General materials science Interdisciplinar Materiais Materials science Materials science (all) Materials science (miscellaneous) Materials science, multidisciplinary Mechanical engineering Mechanics of materials Medicina ii Nanoscience & nanotechnology Nanoscience and nanotechnology Physics, applied Physics, condensed matter Química
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: jordi.morales@estudiants.urv.cat nuria.lopez@urv.cat
    Data d'alta del registre: 2024-09-21
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://onlinelibrary.wiley.com/doi/10.1002/adma.202208299
    Referència a l'article segons font original: Advanced Materials. 35 (1):
    Referència de l'ítem segons les normes APA: Ni B; Mychinko M; Gómez-Graña S; Morales-Vidal J; Obelleiro-Liz M; Heyvaert W; Vila-Liarte D; Zhuo X; Albrecht W; Zheng G; González-Rubio G; Taboada J (2023). Chiral Seeded Growth of Gold Nanorods Into Fourfold Twisted Nanoparticles with Plasmonic Optical Activity. Advanced Materials, 35(1), -. DOI: 10.1002/adma.202208299
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1002/adma.202208299
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2023
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Chemistry, Multidisciplinary,Chemistry, Physical,Materials Science,Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Mechanical Engineering,Mechanics of Materials,Nanoscience & Nanotechnology,Nanoscience and Nanotechnology,Physics, Applied,Physics, Condensed Matter
    amino-acid
    chiral seeded growth
    plasmonic optical activity
    shape control
    twisted nanoparticles
    wulff construction
    Au nanorods
    Chiral seeded growth
    Metal nanoparticles
    Plasmonic optical activity
    Twisted nanoparticles
    Wulff construction
    Astronomia / física
    Chemistry, multidisciplinary
    Chemistry, physical
    Engenharias ii
    Engenharias iii
    Engenharias iv
    General materials science
    Interdisciplinar
    Materiais
    Materials science
    Materials science (all)
    Materials science (miscellaneous)
    Materials science, multidisciplinary
    Mechanical engineering
    Mechanics of materials
    Medicina ii
    Nanoscience & nanotechnology
    Nanoscience and nanotechnology
    Physics, applied
    Physics, condensed matter
    Química
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