| 对羟基苯硫酚自组装膜修饰金电极的制备及电化学表征 |
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| 引用本文： | 冯春梁,周微,张丽梅.对羟基苯硫酚自组装膜修饰金电极的制备及电化学表征[J].平顶山学院学报,2011,26(5):55-58. |
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| 作者姓名： | 冯春梁 周微 张丽梅 |
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| 作者单位： | 辽宁师范大学,辽宁大连,116029 |
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| 基金项目： | 国家自然科学基金(60572009); 辽宁省科技攻关项目(2005220024); 辽宁省科技基金(99102004); 辽宁省教育厅高校重点实验室项目(2008S134) |
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| 摘 要： | 在金电极表面制备了对羟基苯硫酚(4-HTP)自组装单分子膜,构建了一种羟基化金电极表面.在优化实验条件下,利用交流阻抗技术对4-HTP自组装单分子膜电极(4-HTP SAM/Au)进行了原位表征,采用Randles等效电路对阻抗复平面图进行模拟,确定该电极体系的等效电路以及电化学参数,通过电荷传递电阻Rct与组装时间的关系,给出了4-HTP SAM在金电极表面的组装动力学曲线.结果表明,电子传递电阻(Rct)随自组装时间的延长而迅速减小,证明4-HTP SAM是一种导电膜,当自组装时间达到120 min后,Rct不再变化,4-HTP SAM达到组装平衡状态.研究结果对SAMs的制备具有一定指导意义,在生物传感器的研究中具有应用前景.
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| 关 键 词： | 对羟基苯硫酚 自组装单分子膜 电化学交流阻抗 原位表征 |
Construction and Electrochemical Characterization of Hydroxylated Gold Electrode Surface |
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| FENG Chun-liang,ZHOU Wei,ZHANG Li-mei.Construction and Electrochemical Characterization of Hydroxylated Gold Electrode Surface[J].Journal of Pingdingshan University,2011,26(5):55-58. |
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| Authors: | FENG Chun-liang ZHOU Wei ZHANG Li-mei |
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| Institution: | FENG Chun-liang,ZHOU Wei,ZHANG Li-mei(Liaoning Normal University,Dalian,Liaoning 116029,China) |
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| Abstract: | The 4-hydroxy thiol phenol self-assembled monolayers were prepared on the surface of gold electrode and a hydroxylated surface was constructed.In the optimized experimental conditions,electrochemical impedance spectroscopy was used to track the film-forming process of the 4-hydroxy thiol phenol(4-HTP) on the surface of gold electrodes.The equivalent circuit of Randles was used to simulate impedance complex plan,then the equivalent circuit of system and electrochemical parameter was determined.Based on the r... |
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| Keywords: | 4-hydroxy thiol phenol self-assembled monolayers electrochemical impedance spectroscopy insitu characterization |
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