Functionalisation of 20 nm citrate-coated gold nanoparticles using perfluorodecanethiol

Hammed A. Onilude; Marina Santana Vega; Alasdair W. Clark

doi:10.1117/12.2649965

15 March 2023 Functionalisation of 20 nm citrate-coated gold nanoparticles using perfluorodecanethiol

Hammed A. Onilude, Marina Santana Vega, Alasdair W. Clark

Proceedings Volume 12431, Photonic and Phononic Properties of Engineered Nanostructures XIII; 124310A (2023) https://doi.org/10.1117/12.2649965
Event: SPIE OPTO, 2023, San Francisco, California, United States

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.

Conference Presentation

Citation Download Citation

Hammed A. Onilude, Marina Santana Vega, and Alasdair W. Clark "Functionalisation of 20 nm citrate-coated gold nanoparticles using perfluorodecanethiol", Proc. SPIE 12431, Photonic and Phononic Properties of Engineered Nanostructures XIII, 124310A (15 March 2023); https://doi.org/10.1117/12.2649965

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