Electrochemistry of a C84-C2(IV)-Modified Electrode in Aqueous Solutions and Its Interaction with Guanine
Electrochemistry of a C84-C2(IV)-Modified Electrode in Aqueous Solutions and Its Interaction with Guanine
复制标题
C84-C2(IV) 修饰电极在水溶液中的电化学及其与鸟嘌呤的相互作用
DOI：
10.1021/jp112033c
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发表时间：
2011-03
期刊：
影响因子：
--
通讯作者：
Zhu, Zhiwei
中科院分区：
文献类型：
--
作者：
Wang, Shukun;Liu, Lu;Sun, Baoyun;Li, Meixian;Zhu, Zhiwei
研究了C84异构体修饰电极在水溶液中的电化学行为。结果表明，C_2（IV）修饰电极的电化学响应依赖于支持电解质中阳离子的性质。扫描电子显微镜、X射线光电子能谱（XPS）和紫外-可见-近红外（UV-vis-NIR）光谱表征表明，这对氧化还原峰来自水溶液中C2（IV）的单电子转移还原和再氧化。通过电化学、XPS和UV-vis-NIR研究了C2（IV）与鸟嘌呤的相互作用，结果表明C2（IV）与鸟嘌呤形成了电荷转移复合物。
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−visible-near-infrared (UV−vis-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−vis-NIR, and the results illustrate that C2(IV) and guanine have formed a charge-transfer complex.