DataVXAdvanced MaterialsPaper
journal article·2023-01Open access

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

Bing Ni, Mikhail Mychinko, Sergio Gómez‐Graña, Jordi Morales‐Vidal, Manuel Obelleiro‐Liz, Wouter Heyvaert, David Vila‐Liarte, Xiaolu Zhuo, Wiebke Albrecht, Guangchao Zheng, Guillermo González‐Rubio, José M. Taboada, Fernando Obelleiro, Núria López, Jorge Pérez‐Juste, Isabel Pastoriza‐Santos, Helmut Cölfen, Sara Bals, Luis M. Liz‐Marzán

Advanced Materials· Volume 35· Issue 1
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Source abstract

Abstract

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.
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Research context

Nanomaterials

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanocluster Synthesis and Applications · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Physical Chemistry University of Konstanz Universitätsstrasse 10 78457 Konstanz Germany

EMAT University of Antwerp 2020 Antwerp Belgium

NANOlab Center of Excellence University of Antwerp 2020 Antwerp Belgium

CINBIO Universidade de Vigo Departamento de Química Física Campus Universitario As Lagoas 36310 Marcosende Vigo Spain

Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology (BIST) Avinguda Països Catalans 16 43007 Tarragona Spain

Universitat Rovira i Virgili Avinguda Catalunya, 35 43002 Tarragona Spain

EM3WORKS Spin‐off of the University of Vigo and the University of Extremadura PTL Valladares 36315 Vigo Spain

CIC biomaGUNE Basque Research and Technology Alliance (BRTA) 20014 Donostia‐San Sebastián Spain

Biomedical Research Networking Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER‐ BBN) 20014 Donostia‐San Sebastián Spain

Department of Applied Chemistry University of the Basque Country 20018 Donostia‐San Sebastián Spain

School of Physics and Microelectronics Key laboratory of Material Physics Ministry of Education Zhengzhou University Zhengzhou 450001 P. R. China

Departamento de Tecnología de los Computadores y Comunicaciones Universidad de Extremadura 10003 Cáceres Spain

Departamento de Teoría de la Señal y Comunicaciones University of Vigo 36310 Vigo Spain

Ikerbasque Basque Foundation for Science 20014 Bilbao Spain

Funding

Agencia Estatal de Investigación · Xunta de Galicia · European Regional Development Fund · European Commission · H2020 European Research Council · Ministerio de Ciencia e Innovación · Alexander von Humboldt-Stiftung · Deutsche Forschungsgemeinschaft · National Natural Science Foundation of China · Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia

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