Repositori institucional URV
| URV's Author/s: | Lopez Alonso, Nuria / Morales Vidal, Jordi |
| Author, as appears in the 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 |
| Author's mail: | jordi.morales@estudiants.urv.cat nuria.lopez@urv.cat |
| Journal publication year: | 2023 |
| Publication Type: | Journal Publications |
| 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 |
| Papper original source: | Advanced Materials. 35 (1): |
| Abstract: | 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. |
| Article's DOI: | 10.1002/adma.202208299 |
| Link to the original source: | https://onlinelibrary.wiley.com/doi/10.1002/adma.202208299 |
| Papper version: | info:eu-repo/semantics/publishedVersion |
| licence for use: | https://creativecommons.org/licenses/by/3.0/es/ |
| Department: | Química Física i Inorgànica |
| Licence document URL: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Thematic Areas: | 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 |
| Keywords: | 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 |
| Entity: | Universitat Rovira i Virgili |
| Record's date: | 2024-09-21 |
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