一步法制备高导电聚3,4-乙烯二氧噻吩∶聚苯乙烯磺酸水凝胶及其电化学传感研究

崔入文 冯涛涛 高楠 张美宁

引用本文: 崔入文, 冯涛涛, 高楠, 张美宁. 一步法制备高导电聚3,4-乙烯二氧噻吩∶聚苯乙烯磺酸水凝胶及其电化学传感研究[J]. 分析化学, 2022, 50(6): 859-868. doi: 10.19756/j.issn.0253-3820.221091 shu
Citation:  CUI Ru-wen,  FENG Tao-tao,  GAO Nan,  ZHANG Mei-ning. Preparation of Conductive Poly(3,4-ethylenedioxythiophene): Poly(styrene sulfonate) Hydrogel by One-step Method for Electrochemical Sensor[J]. Chinese Journal of Analytical Chemistry, 2022, 50(6): 859-868. doi: 10.19756/j.issn.0253-3820.221091 shu

一步法制备高导电聚3,4-乙烯二氧噻吩∶聚苯乙烯磺酸水凝胶及其电化学传感研究

    通讯作者: 张美宁,E-mail:mnzhang@ruc.edu.cn
  • 基金项目:

    国家自然科学基金项目(Nos.21874152,22174162)资助。

摘要: 作为一种新型导电聚合物水凝胶材料,聚3,4-乙烯二氧噻吩∶聚苯乙烯磺酸(PEDOT∶PSS)在生物电子和生物传感领域受到越来越多的关注。然而,目前PEDOT∶PSS水凝胶的制备大多需要以非导电水凝胶为模板,或制备条件苛刻,这极大地影响了其在电化学生物传感领域的应用。本研究建立了一种简单的制备PEDOT∶PSS水凝胶的新方法,将含有乙二醇的PEDOT∶PSS水溶液经过真空干燥处理,再次吸水溶胀后即可获得稳定、具有三维交联网络的PEDOT∶PSS水凝胶。制备的PEDOT∶PSS水凝胶具有微/纳多级孔及三维导电网络结构,电导率可达到(3321.33±129.41) S/m,形貌可稳定保持2个月。PEDOT∶PSS水凝胶修饰的电极不但具有良好的异相电子转移和传质能力,而且可在一个月内有效抵抗蛋白质吸附对电化学信号的影响。水凝胶的三维网络可稳定地固载酶,并显著提高了酶电化学传感器的稳定性,酶传感器在储存1个月后的信号强度仍保持在初始信号强度的90%以上。此水凝胶为电化学传感器检测复杂生物样品提供了新的策略。

English


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  • 收稿日期:  2022-02-22
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