Influence of an external magnetic field on the formation of self-assembled monolayers of dodecanethiol on polycrystalline gold electrode

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• 作者：Jiongjia Cheng ; Jianyuan Dai ; Jing Jin ; Li Qiu ; Guiyin Fang ; Zhiguo Li ; Yongbo Sun ; Shuping Bi
• 关键词：Dodecanethiol ; Polycrystalline gold electrode ; Self-assembled monolayers ; Magnetic field
• 刊名：Thin Solid Films
• 出版年：2009
• 出版时间：1 May 2009
• 年：2009
• 卷：517
• 期：13
• 页码：3661-3666
• 全文大小：633 K

文摘

This paper reports the preparation of dodecanethiol self-assembled monolayers (C₁₂SH-SAMs) on polycrystalline gold electrodes in a magnetic field. The qualities of C₁₂SH-SAMs were characterized by both cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results show that highly dense and well-ordered SAMs could form in a relatively short time (3 h), indicating that the rate of SAMs formation increased under an external magnetic field compared with the natural self-assembly process. Moreover, the results of CV and EIS measurements also suggested that the presence of a magnetic field had influenced the qualities of the SAMs; the stronger magnetic intensity can help to obtain much denser and well-ordered SAMs.