Electrochemical Characterization of Nanosized Electrode Arrays Prepared from Nanoporous Self-Assembled Monolayers

2002 Bulletin of the Korean Chemical Society (Print)  
We characterized nanoelectrode arrays prepared from self-assembled monolayers (SAMs) by adsorption from a solution containing thiolated β-cyclodextrin (β-CD) and n-alkanethiol on the gold electrode surface, using electrochemical methods. While the framework, the n-hexadecanethiol SAM, effectively blocked electron transfer between the electrode surface and solution-phase redox probe molecules, the β-CD cavities isolated in the forests of n-hexadecanethiol molecules were shown to act as an
more » ... to act as an ultramicroelectrode array. The shapes of cyclic voltammograms of probe molecules were related to the number densities of β-CD molecules within the monolayer films. Probe molecules that have the correct combination of physical and chemical characteristics were shown to effectively penetrate the framework through the β-CD pores and exchange electrons with the electrode surface.
doi:10.5012/bkcs.2002.23.5.699 fatcat:ffammqdxzvc55lwrtvdpy3rene