Roach, L orcid.org/0000-0002-9166-6662, Coletta, PL orcid.org/0000-0002-3858-6073, Critchley, K orcid.org/0000-0002-0112-8626 et al. (1 more author) (2022) Controlling the Optical Properties of Gold Nanorods in One-Pot Syntheses. The Journal of Physical Chemistry C, 126 (6). pp. 3235-3243. ISSN 1932-7447
Abstract
We present the characterization of the CTAB-oleate controlled synthesis of gold nanorods (AuNRs). Concentrations of key compounds in the synthetic system were varied in the presence of oleate, including HCl, borohydride, silver nitrate, and ascorbic acid. The longitudinal surface plasmon resonance peak was sensitive to changes in all concentrations. Reducing the concentration of Ag ions below 66 μM led to slower reaction kinetics and incomplete Au reduction. Variation of the ascorbic acid concentration revealed that oleate is responsible for around 44% of reduction of Au3+ to Au+ before nucleation in these experiments. Increasing the oleate concentration significantly slows the growth kinetics and leads to much longer synthesis times of above 12 h for reaction completion. These observations will enable the design of better methods of synthesizing of AuNRs using binary surfactants.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 American Chemical Society. This is an author produced version of an article published in Journal of Physical Chemistry C. Uploaded in accordance with the publisher's self-archiving policy. |
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 |
Funding Information: | Funder Grant number EPSRC (Engineering and Physical Sciences Research Council) EP/P023266/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 Mar 2022 11:23 |
Last Modified: | 09 Jan 2025 10:32 |
Status: | Published |
Publisher: | American Chemical Society |
Identification Number: | 10.1021/acs.jpcc.1c10447 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:184369 |