| 甘氨酸修饰玻碳电极的离子通道行为 |
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| 引用本文： | 刘焕新,邵会波,李玉红.甘氨酸修饰玻碳电极的离子通道行为[J].首都师范大学学报(自然科学版),2006,27(4):44-47. |
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| 作者姓名： | 刘焕新 邵会波 李玉红 |
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| 作者单位： | 1. 首都师范大学化学系,北京,100037
2. 首都师范大学化学系,北京,100037;北京理工大学理学院化学系,北京,100081 |
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| 摘 要： | 用电化学氧化技术将甘氨酸修饰在玻碳电极表面形成稳定的单分子膜.改变含离子探针Fe(CN)63-的电解质溶液的pH,或向溶液中加入不同浓度的Ca2 ,通过膜电极上Fe(CN)63-的电子传递,对膜的离子通道行为进行了研究.实验表明,在pH较低或有Ca2 存在的条件下,离子通道开启;pH较高或无Ca2 存在的条件下,离子通道关闭.推测了膜电极离子通道的形成机理.
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| 关 键 词： | 甘氨酸修饰电极 循环伏安 离子通道 |
| 收稿时间： | 2005-10-21 |
| 修稿时间： | 2005年10月21 |
The Ion Channel Behavior of Glycine Modified Glassy Carbon Electrode |
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| Liu Huanxin,Shao Huibo,Li Yuhong.The Ion Channel Behavior of Glycine Modified Glassy Carbon Electrode[J].Journal of Capital Normal University(Natural Science Edition),2006,27(4):44-47. |
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| Authors: | Liu Huanxin Shao Huibo Li Yuhong |
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| Institution: | 1. Department of Chemistry, Capital Normal University, Beijing 100037 ; 2. Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081 |
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| Abstract: | Glycine was covalently modified on a glassy carbon electrode(GCE) by electrochemical oxidation which made stable monolayer.In order to study the ion channel behavior of the modified electrode,electron transfer was investigated with Fe(CN)~(3-)-6 redox probe in different concentration of protons and Ca~(2 ),respectively.The result showed that:the ion channel was opened in the presence of Ca~(2 ) or the solution was in low pH;in the absence of Ca~(2 ) or the solution was in high pH the channel was switched.The mechanism of forming an ion channel was investigated. |
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| Keywords: | Fe(CN)3-6 |
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