Graphene oxide doped conducting polymer nanocomposite film for electrode-tissue interface

作者：Tian, Hong-Chang; Liu, Jing-Quan^*; Wei, Dai-Xu; Kang, Xiao-Yang; Zhang, Chuan; Du, Jing-Cheng; Yang, Bin; Chen, Xiang; Zhu, Hong-Ying; NuLi, Yan-Na; Yang, Chun-Sheng

来源：Biomaterials, 2014, 35(7): 2120-2129.

DOI：10.1016/j.biomaterials.2013.11.058

• Graphene oxide
• Conducting polymer
• Electrode-tissue interface
• Microelectrode
• Electrochemical deposition
• Tissue engineering

One of the most significant components for implantable bioelectronic devices is the interface between the microelectrodes and the tissue or cells for disease diagnosis or treatment. To make the devices work efficiently and safely in vivo, the electrode-tissue interface should not only be confined in micro scale, but also possesses excellent electrochemical characteristic, stability and biocompatibility. Considering the enhancement of many composite materials by combining graphene oxide (GO) for its multiple advantages, we dope graphene oxide into poly(3,4-ethylenedioxythiophene) (PEDOT) forming a composite film by electrochemical deposition for electrode site modification. As a consequence, not only the enlargement of efficient surface area, but also the development of impedance, charge storage capacity and charge injection limit contribute to the excellent electrochemical performance. Furthermore, the stability and biocompatibility are confirmed by numerously repeated usage test and cell proliferation and attachment examination, respectively. As electrode-tissue interface, this biomaterial opens a new gate for tissue engineering and implantable electrophysiological devices.

• 出版日期2014-2
• 单位上海交通大学