期刊
SURFACE SCIENCE
卷 602, 期 1, 页码 151-155出版社
ELSEVIER
DOI: 10.1016/j.susc.2007.10.006
关键词
dithiocarbamate; gold nanoparticles; dopamine; electrochemical sensors
Dithiocarbamate and gold nanoparticles have been successfully assembled onto the surface of the gold electrode and a novel ultrastable chemical modified electrode (CME) was fabricated conveniently. The as-prepared CME was investigated by electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM) and quartz crystal microbalance (QCM), and its electrochemical behaviors for catalytic oxidation of dopamine (DA) was also observed by cyclic voltammetry (CV) and amperometric i-t curve. The results indicated that the novel surface has endowed the electrode with not only ultrastability but also the advantages of organic ligands and gold nanoparticles, which open up a new way to design high efficient and utility electrochemical sensors for biomolecule detection. (C) 2007 Elsevier B.V. All rights reserved.
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