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| 聚苯胺/金复合纳米纤维在大脑神经递质多巴胺检测中的应用 |
| 作者：彭芳芳1 郭志睿2 张宇3 顾宁3 |
| 单位：1.江苏省生物材料与器件重点实验室,江苏,南京,210096;东南大学,生物电子学国家重点实验室,江苏,南京,210096;东南大学,化学化工学院,江苏,南京,210096； 2.江苏省生物材料与器件重点实验室,江苏,南京,210096； 3.江苏省生物材料与器件重点实验室,江苏,南京,210096;东南大学,生 |
| 关键词：复合纳米纤维 多巴胺 聚苯胺 金纳米颗粒 抗坏血酸 电化学 |
| 分类号：R-33, Q42, O657.1 |
| 出版年·卷·期（页码）：2008·27·第四期（250-255） |
| 摘要： |
目的:研究聚苯胺/金(PANI/Au)复合纳米纤维修饰电极能否高灵敏、高选择检测大脑神经递质多巴胺(DA).方法:基于PANI/Au修饰电极,电化学方法检测DA的响应电流,脉冲伏安法分析DA和抗坏血酸(AA)共存下的情况.结果:PANI/Au修饰电极可以获得DA的响应电流分别是单纯PANI修饰电极和裸电极的1.5和2.4倍,并且检测到DA和AA的峰电位相差达260 mV.结论:PANI/Au复合纳米纤维修饰电极可以提高DA的检测灵敏度和选择性. |
Objective To study whether the polyaniline/Au(PANI/Au) composite nanofibers-modified electrode can be used to sensitively and selectively determine neuro-transmitter dopamine.Methods The electrochemical method was used to detect the response of current of DA based on PANI/Au composite nanofibers-modified electrode.The coexistent system of DA and AA was analyzed by differential pulse voltammetry.Results The PANI/Au composite nanofibers-modified electrode had obtained the electrocatalytic anodic current of DA 1.5-fold higher than the pure PANI-modified electrode did and 2.4-fold higher than the bare electrode did.And the separation between the voltammetric peaks of AA and DA was large(260 mV).Conclusion The PANI/Au composite nanofibers have been demonstrated to be able to promote the sensitivity and selectivity of the detection of DA. |
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