Roach, L orcid.org/0000-0002-9166-6662, Ye, S orcid.org/0000-0001-5152-5753, Moorcroft, SCT orcid.org/0000-0002-4028-2124 et al. (3 more authors) (2018) Morphological Control of Seedlessly-Synthesised Gold Nanorods using Binary Surfactants. Nanotechnology, 29 (13). 135601. ISSN 0957-4484
Abstract
High purity gold nanorods (AuNRs) with tunable morphology have been synthesized through a binary-surfactant seedless method, which enables the formation of monocrystalline AuNRs with diameters between 7 and 35 nm. The protocol has high shape yield and monodispersity, demonstrating good reproducibility and scalability allowing synthesis of batches 0.5 l in volume. Morphological control has been achieved through the adjustment of the molar concentrations of cetyltrimethylammonium bromide and sodium oleate in the growth solution, providing fine tuning of the optical scattering and absorbance properties of the AuNRs across the visible and NIR spectrum. Sodium oleate was found to provide greatest control over the aspect ratio (and hence optical properties) with concentration changes between 10 and 23 mM leading to variation in the aspect ratio between 2.8 and 4.8. Changes in the geometry of the end-caps were also observed as a result of manipulating the two surfactant concentrations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. (https://creativecommons.org/licenses/by/3.0/) |
Keywords: | morphological control; gold nanorod; binary surfactant; one–pot synthesis; high purity |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Molecular & Nanoscale Physics The University of Leeds > Faculty of Medicine and Health (Leeds) > Institute of Molecular Medicine (LIMM) (Leeds) > Section of Molecular Gastroenterology (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/K503526/1 MRC MR/K015613/1 MRC MC_PC_14109 EPSRC EP/P00122X/1 EPSRC EP/P005233/1 EPSRC EP/P023266/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 Jan 2018 10:23 |
Last Modified: | 16 Dec 2024 14:06 |
Status: | Published |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1361-6528/aaa99d |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:126646 |