| 锌电极上2-巯基吡啶自组装单层的原位表面增强拉曼光谱电化学观察 |
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| 引用本文： | 纪佳华,杨海峰,马晓玲,孙一平,朱璇,宋巍,段国萍.锌电极上2-巯基吡啶自组装单层的原位表面增强拉曼光谱电化学观察[J].化学学报,2008,66(11):1333-1336. |
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| 作者姓名： | 纪佳华 杨海峰 马晓玲 孙一平 朱璇 宋巍 段国萍 |
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| 作者单位： | 上海师范大学化学系,上海,200234 |
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| 基金项目： | 上海市科委资助项目
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上海市教委重点研究基金
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湖南人学化学生物传感器与计量学国家重点实验室开放基金 |
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| 摘 要： | 利用原位表面增强拉曼散射(SERS)技术, 观察了2-巯基吡啶在锌电极上单层吸附和脱附行为. SERS实验结果表明, 2-巯基吡啶分子主要通过巯基上的硫原子垂直吸附于锌表面. 原位SERS光谱电化学发现, 当外加电位达到－1.4 V vs. SCE时, 分子开始从表面脱附, 并伴随吸附构型变化, 在－1.6 V时发生完全脱附.
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| 关 键 词： | 锌电极 2-巯基吡啶 自组装 原位表面增强拉曼光谱 电化学 |
| 收稿时间： | 2007-5-8 |
| 修稿时间： | 2008-1-20 |
In situ Surface-enhanced Raman Scattering Spectro-electrochemical Observation of 2-Mercaptopyridine Self-assembled Monolayer on Zinc Electrode |
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| JI Jia-Hu,YANG Hai-Feng,MA Xiao-Ling,SUN Yi-Ping,ZHU Xuan,SONG Wei,DUAN Guo-Ping.In situ Surface-enhanced Raman Scattering Spectro-electrochemical Observation of 2-Mercaptopyridine Self-assembled Monolayer on Zinc Electrode[J].Acta Chimica Sinica,2008,66(11):1333-1336. |
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| Authors: | JI Jia-Hu YANG Hai-Feng MA Xiao-Ling SUN Yi-Ping ZHU Xuan SONG Wei DUAN Guo-Ping |
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| Institution: | (Department of Chemistry, Shanghai Normal University, Shanghai 200234) |
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| Abstract: | The adsorption and desorption behavior of 2-mercaptopyridine monolayer on a Zn electrode was observed by surface-enhanced Raman spectroscopy (SERS). The SERS experimental results showed that the 2-mercaptopyridine (2-MPy) was adsorbed on the Zn electrode through S and N atoms leading to its pyridine ring perpendicular with respect to the surface. When the potential reached －1.4 V vs. SCE, the 2-mercaptopyridine molecules tended to depart from the Zn surface along with the change of adsorption mode and were entirely desorbed at －1.6 V vs. SCE. |
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| Keywords: | zinc electrode 2-mercaptopyridine self-assembled monolayer in-situ surface-enhanced Raman spectroscopy electrochemistry |
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