喷涂制备PEDOT:PSS/碳纳米管电化学检测柔性微电极  

Spray-printed PEDOT:PSS/carbon nanotube flexible microelectrodes for electrochemical sensing

作　　者：陈富斌 李钊贤 谢庄 CHEN Fubin;LI Zhaoxian;XIE Zhuang(School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]中山大学材料科学与工程学院,广东广州510275

出　　处：《中山大学学报（自然科学版）（中英文）》2023年第2期66-72,共7页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金(22075325);广州市科技计划基础与应用基础研究项目(202002030434)。

摘　　要：采用聚(3,4-乙烯二氧噻吩):聚(苯乙烯磺酸盐)(PEDOT:PSS)导电高分子与多壁碳纳米管(MWCNTs)复合并结合双三氟甲基磺酸亚酰胺锂(LiTFSI)掺杂,利用简易喷涂技术可在不同基底表面生成具备高导电性与优异柔性的微图案化PEDOT:PSS/MWCNTs复合电极。研究发现,根据制备条件优化,可实现高响应电流与稳定的薄膜电化学传感电极,并基于此制备了高灵敏和稳定检测的柔性电化学传感器,能够对缓冲溶液中浓度范围在1~500μmol/L的过氧化氢和多巴胺这两种与生物过程相关的重要分子进行检测。该柔性电极有望进一步应用于可穿戴电子及生化信号检测领域。Flexible composite microelectrodes were prepared using poly(3,4-ethylenedioxythio‐phene):poly(styrene sulfonate)(PEDOT:PSS)conductive polymer and multi-walled carbon nanotubes(MWCNTs)in combination with bis-trifluoromethanesulfonic acid lithium amide(LiTFSI)doping.A facile spray printing technique was developed to pattern the PEDOT:PSS/MWCNTs composite electrodes with high conductivity and excellent flexibility,which can be generated on various substrates.The study found that,based on the optimization of the spray conditions,the high current response and stable thin-film electrochemical sensing electrodes can be realized.And flexible electro‐chemical sensor was established to detect hydrogen peroxide and dopamine in the buffer solution at concentrations ranging from 1μmol/L to 500μmol/L.Such flexible electrodes are expected to be further applied in the fields of wearable electronics and monitoring of biochemical signals.

关 键 词：导电高分子 碳纳米管 复合电极 电化学传感器 柔性电子 

分 类 号：O646[理学—物理化学]