Electrochemically Synthesized Polypyrrole Coatings and Their Effect on Electrical Properties of Neural Microelectrode

Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (04): 477-482. Previous Articles Next Articles

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聚吡咯涂层的电化学合成及对神经微电极电性能的影响

邓萌，汪茫，陈红征*

(高分子合成与功能构造教育部重点实验室浙江大学高分子科学与工程学系杭州 310027)

投稿日期:2010-04-08 修回日期:2010-09-17 发布日期:2010-10-21
通讯作者: 陈红征 E-mail:hzchen@zju.edu.cn
基金资助:
国家自然科学基金项目;高等学校博士学科点专项科研基金

Electrochemically Synthesized Polypyrrole Coatings and Their Effect on Electrical Properties of Neural Microelectrode

DENG Meng, WANG Mang, CHEN Hong-Zheng

(MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027)

Received:2010-04-08 Revised:2010-09-17 Published:2010-10-21

Abstract

A series of conducting polypyrrole (PPy) coatings with different thickness and morphology were electrochemically synthesized on neural microelectrodes. The chemical component and morphology of PPy coatings were characterized by X-ray photoelectron spectroscopy and scanning electron microscope. The effect of PPy coatings on electrical properties of neural microelectrode was further studied. Electrochemical impedance spectroscopy of neural microelectrodes before and after PPy coating indicated that the neural microelectrode s impedance after PPy coating dropped to 1/55 of that without PPy coating. Cyclic voltammograms showed that the electric capacity of neural microelectrode with PPy coating was evidently increased with a longer reaction time or a higher current density within a range.

Key words: polypyrrole, neural microelectrode, electrochemical impedance spectroscopy, cyclic voltammetry

Cite this article

DENG Meng, WANG Mang, CHEN Hong-Zheng. Electrochemically Synthesized Polypyrrole Coatings and Their Effect on Electrical Properties of Neural Microelectrode[J]. Acta Chimica Sinica, 2011, 69(04): 477-482.

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聚吡咯涂层的电化学合成及对神经微电极电性能的影响

Electrochemically Synthesized Polypyrrole Coatings and Their Effect on Electrical Properties of Neural Microelectrode

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