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Issue 109, 2014
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Fullerene modification of gold electrodes and gold nanoparticles based on application of aromatic thioacetate-functionalized C60

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Abstract

A new procedure for the synthesis of S-acetyl-derivatized fullerene is described. The deprotected aromatic S-acetyl-derivatized fullerene was employed for efficient modification of a gold electrode and gold nanoparticles. The proposed deposition procedure of fullerene derivative on Au surfaces allows the control of the thickness of the self-assembled fullerene layer. The modified surfaces were characterized by electrochemical methods and X-ray photoelectron spectroscopy (XPS). Functionalized fullerenes largely retain favorable redox electronic properties, behaving as an electron sink and revealing 4 reversible sequential 1e electrode processes at slightly more negative potentials than those observed for unsubstituted C60. For the first time, fullerene-capped gold nanoparticles were obtained by a two-step ligand exchange procedure involving substitution of alkanethiol with thiolated fullerene derivative following the synthesis of alkanethiol capped nanoparticles. The ligand exchange procedure was very efficient – the number of fullerene moieties per single gold nanoparticle was found to be as high as 30.

Graphical abstract: Fullerene modification of gold electrodes and gold nanoparticles based on application of aromatic thioacetate-functionalized C60

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Supplementary files

Article information


Submitted
10 Oct 2014
Accepted
19 Nov 2014
First published
19 Nov 2014

RSC Adv., 2014,4, 64310-64318
Article type
Paper
Author version available

Fullerene modification of gold electrodes and gold nanoparticles based on application of aromatic thioacetate-functionalized C60

P. Piotrowski, J. Pawłowska, J. Pawłowski, L. J. Opuchlik, R. Bilewicz and A. Kaim, RSC Adv., 2014, 4, 64310
DOI: 10.1039/C4RA12139B

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