Functionalisation of 20 nm Citrate-Coated Gold Nanoparticles Using Perfluorodecanethiol

Onilude, H. A., Santana Vega, M. and Clark, A. W. (2023) Functionalisation of 20 nm Citrate-Coated Gold Nanoparticles Using Perfluorodecanethiol. In: SPIE OPTO 2023, San Francisco, CA, USA, 28 Jan-3 Feb 2023, (doi: 10.1117/12.2649965)

Abstract

Colloidal synthesis of metal nanoparticles (NPs) requires the use of surfactants or other capping agents as stabilisers. These capping agents form monolayers on the NP surface and determine their functionalities. In most cases, the capping agent used for the synthesis does not provide the required properties for the desired applications and must be exchanged in a separate step. NP functionalisation through ligand exchange is a common strategy to alter their chemical and physical properties to expand their applications. Here, we show the functionalisation of 20 nm citrate-capped gold NPs (AuNPs) with perfluorodecanethiol (PFDT) to generate reversible interactions by exploiting the fluorous effect. Ultraviolet-visible (UV-vis) spectrophotometry and zeta potential (ZP) characterization was performed before and after functionalisation to confirm ligand exchange.

• Item Type: Conference Proceedings
• Keywords: Gold nanoparticles, ligand exchange, fluorous compounds.
• Status: Published
• Refereed: No
• Glasgow Author(s) Enlighten ID: Onilude, Mr Hammed and Santana Vega, Dr Marina and Clark, Professor Alasdair
• Authors: Onilude, H. A., Santana Vega, M., and Clark, A. W.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Biomedical Engineering
• ISSN: 0277-786X
• Copyright Holders: Copyright © 2023 SPIE
• First Published: First published in Proceedings of SPIE 12431:124310A
• Publisher Policy: Reproduced in accordance with the publisher copyright policy