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

Bulletin of the Korean chemical society

Shin-Jung Choi¹  Su-Moon Park¹ 

关键词: Nanoporous;    Nanoelectrode arrays;    Thiolated b-cyclodextrin;    Self-assembled monolayers;    Molecular selectivity.;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

We characterized nanoelectrode arrays prepared from self-assembled monolayers (SAMs) by adsorption from a solution containing thiolated �?-cyclodextrin ( �?-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 �?-CD cavities isolated in the forests of n-hexadecanethiol molecules were shown to act as an ultramicroelectrode array. The shapes of cyclic voltammograms of probe molecules were related to the number densities of �?-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 �?-CD pores and exchange electrons with the electrode surface.

【 授权许可】

Unknown