Investigation of Ion Transport Traversing the 鈥淚on Channels鈥?by Scanning Electrochemical Microscopy (SECM)

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• 作者：Xiaoquan Lu ; Tianxia Wang ; Xibing Zhou ; Yao Li ; Bowan Wu ; Xiuhui Liu
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：March 24, 2011
• 年：2011
• 卷：115
• 期：11
• 页码：4800-4805
• 全文大小：864K
• 年卷期：v.115,no.11(March 24, 2011)
• ISSN：1932-7455

文摘

In the nervous system, ion channels are essential for all processes. The highly ordered porous anodic aluminum oxide (AAO) was modified at the interface between two immiscible electrolyte solutions (ITIES) to recover the process of ion transfer through the ion channels. The study on dynamic process of ion transfer through the ion channels obtained for DK+0 is 1.40 脳 10鈭? cm2 s鈭? and DNa+0 is 2.74 脳 10鈭? cm2s鈭?. The result offers tremendous advantages for linear relationship between the half-wave potential and concentration of K+ and Na+. In addition, it will be helpful to understand both the mechanism about the dynamics and thermodynamics processes of ion transfer through the ion channels and the role about ionic concentration in nerve conduction.