Synthesis of Au clusters-redox centre hybrids by diazonium chemistry employing double layer charged gold nanoparticles

Razzaq, Humaira, Qureshi, Rumana, Cabo-Fernandez, Laura and Schiffrin, David J ORCID: 0000-0002-5630-9256 (2018) Synthesis of Au clusters-redox centre hybrids by diazonium chemistry employing double layer charged gold nanoparticles. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 819. pp. 9-15.

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Official URL: http://dx.doi.org/10.1016/j.jelechem.2017.05.016

Abstract

The experimental conditions in the two-phase synthesis of hexanethiolate gold monolayer-protected clusters (C6-Au) have been investigated by varying the thiolation and reduction times to give particles with an average core diameter of 1.66 nm and a capacitance of 0.54–0.59 aF. These clusters were further functionalised with anthraquinone by reaction between the diazonium derivative of 1-amino anthraquinone and electrochemically or chemically charged nanoparticles. Cyclic voltammetry and differential pulse voltammetry measurements demonstrate functionalisation by the redox couple and the presence of quantised double layer (QDL) charging events at the gold core. The feasibility of using a dispersion of charged nanoparticles as reagents for driving a diazotisation reaction to attach redox ligands is demonstrated.

Item Type:	Article
Uncontrolled Keywords:	Gold nanoparticles, Quantised double layer charging, Fast Fourier Transform nanoparticle charging, analysis, Diazonium functionalisation, anthrahaquinone, electrochemistry, Monolayer protected nanoparticle synthesis
Depositing User:	Symplectic Admin
Date Deposited:	08 Jun 2018 14:38
Last Modified:	19 Jan 2023 01:32
DOI:	10.1016/j.jelechem.2017.05.016
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3022206