南京理工大学张树鹏研究组分享 http://blog.sciencenet.cn/u/shupeng2009

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钱悦月、马闯等在Sensors and Actuators B: Chemical发表文章

已有 1581 次阅读 2018-9-11 09:11 |个人分类:点滴成果|系统分类:论文交流

       钱悦月与马闯硕士研究生及其团队成员,高娟娟,刘茂祥,谢康俊,王霜等人克服了PEDOT:PSS聚合物的导电性低和催化活性低等难题,最新报道了通过将β-环糊精与酸处理的聚(3,4-亚乙基二氧噻吩):聚苯乙烯(表示为CD-f-PEDOT:PSS)组合,成功制备了高导电性和电化学活性的膜。利用X射线光电子能谱,原子力显微镜,循环伏安和非对称等方法研究了高性能CD-f-PEDOT:PSS传感器的独特性能.CD-f-PEDOT:PSS对多巴胺(DA)和邻苯二酚(CT)的敏感性,而不使用昂贵的贵金属或氧化铟锡(ITO)基底,并且消耗更多时间来抛光传统电极的表面。 DACT磷酸盐缓冲溶液(PBS, pH = 7.4)的检测限(3倍信噪比)分别为9.596 nmol/L0.028μmol/L。而且CD-f-PEDOT:PSS薄膜传感器具有良好的抗干扰性和重现性。 CD-f-PEDOT:PSS薄膜传感器是传统ITO电极,金电极或玻碳电极等传统电极的替代电极,具有满意的效果和简便的制备方法。

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Title: High performance electrochemical electrode based on polymeric composite film for sensing of dopamine and catechol

Authors: Yueyue Qiana,, Chuang Maa,,Shupeng Zhanga,*, Juanjuan Gaoa, Maoxiang Liua, Kangjun Xiea, Shuang Wang a, Kuan Sunb,*, Haiou Songc,*

Y.Y. Qian and C. Ma contributed equally to this work.

Abstract: A highly conductive and electrochemically active film has been successfully fabricated by combining beta-cyclodextrin with acid-treated poly(3,4-ethylenedioxythiophene):polystyrene (denoted as CD-f-PEDOT:PSS). The unique properties of the high performance CD-f-PEDOT:PSS sensor was investigated by utilizing X-ray photoelectron spectroscopy, atomic force microscope, cyclic voltammetry and amperometrici-t, etc.The CD-f-PEDOT:PSS film exhibits high-sensitivity towards dopamine (DA) and catechol (CT) without employing expensive noble metal or indium tin oxide (ITO) substrate and consuming much more time to polish the surface of traditional electrodes. The detection limits (S/N = 3) for DA and CT in phosphate buffer solutions (PBS, pH = 7.4) are 9.596 nM and 0.0275 μM, respectively. Furthermore, the CD-f-PEDOT:PSS film sensor exhibits good anti-interference and reproducibility. The encouraging results as well as facile preparation method suggest the CD-f-PEDOT:PSS film sensor is a promising alternative electrode to traditional ones such as ITO, gold or glassy carbon electrodes.

全文链接:http://www.sciencedirect.com/science/article/pii/S0925400517316052

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