Issue 9, 2008
From the journal:

Chemical Society Reviews

Quantised charging of monolayer-protected nanoparticles†

Timo Laaksonen,a   Virginia Ruiz,b   Peter Liljerothc  and  Bernadette M. Quinn*d  

* Corresponding authors

a Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, PO Box 56, FIN-00014 University of Helsinki, Finland

b Department of Chemistry, University of Burgos, Pza. Misael Banuelos, s/n, Burgos, Spain

c Condensed Matter and Interfaces, Debye Institute, University of Utrecht, PO Box 80000, 3508 TA Utrecht, The Netherlands

d Department of Chemistry, Helsinki University of Technology, PO Box 6100, Finland

Abstract

Metal nanoparticles coated with an organic monolayer, so-called monolayer protected clusters (MPCs), can show quantised charging at room temperature due to their sub-attofarad capacitance arising from the core size and the nature of the protecting monolayer. In this tutorial review, we examine the factors affecting the energetics of MPC charging. In the first section, the underlying physics of quantised charging is outlined and we give an overview of the various methods that can be used to measure single electron transfer to nanoparticles. In the subsequent sections, we discuss how electrochemical measurements can be used to give information on the quantised charging of freely diffusing and films of immobilised MPCs. The predictions of models used to determine MPC capacitance are compared with experimental data from the literature.

Graphical abstract: Quantised charging of monolayer-protected nanoparticles

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Article information

DOI
https://doi.org/10.1039/B713681C
Article type
Tutorial Review
Submitted
27 Feb 2008
First published
08 Jul 2008

Chem. Soc. Rev., 2008,37, 1836-1846

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Quantised charging of monolayer-protected nanoparticles

T. Laaksonen, V. Ruiz, P. Liljeroth and B. M. Quinn, Chem. Soc. Rev., 2008, 37, 1836 DOI: 10.1039/B713681C

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