Electrochemistry of a C84-C2(IV)-Modified Electrode in Aqueous Solutions and Its Interaction with Guanine

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• 作者：Lu Liu ; Shukuan Wang ; Zhiwei Zhu ; Meixian Li ; Baoyun Sun
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：April 7, 2011
• 年：2011
• 卷：115
• 期：13
• 页码：5966-5973
• 全文大小：1034K
• 年卷期：v.115,no.13(April 7, 2011)
• ISSN：1932-7455

文摘

The electrochemistry of C₈₄ isomer-modified electrodes was investigated in aqueous solutions. It is found that the C₈₄-C₂(IV) (denoted as C₂(IV) for short)-modified electrode shows one pair of redox peaks, and its electrochemical responses depend on the nature of cations of the supporting electrolyte. Scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), and ultraviolet鈭抳isible-near-infrared (UV鈭抳is-NIR) spectral characterizations reveal that the pair of redox peaks originate from one-electron-transfer reduction and reoxidation of C₂(IV) in the aqueous solution. Furthermore, interaction between C₂(IV) and guanine has been investigated by electrochemistry, XPS, and UV鈭抳is-NIR, and the results illustrate that C₂(IV) and guanine have formed a charge-transfer complex.