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热处理创造了水稳定的PEDOT:PSS 生物电子的片

Siddharth Doshi1, Margaux O A Forner2, Pingyu Wang1

  • 1Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.

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概括
此摘要是机器生成的。

高温烤使PEDOT:PSS膜成为生物电子的水稳定性. 这种简单的热处理提高了体积电容,并使3D图案能够在不影响性能的情况下实现.

关键词:
导电性聚合物中的导电性聚合物.电化学晶体管 电化学晶体管可以植入的探头.激光打造图案的方法聚合物加工加工的聚合物加工

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科学领域:

  • 生物电子学 生物电子学
  • 材料科学 材料科学 材料科学
  • 有机电子 有机电子

背景情况:

  • 有机混合离子电子导体,如PEDOT:PSS,由于其机械和生物相容性特性,对生物电子设备至关重要.
  • PEDOT:PSS因其导电性和可加工性而广泛使用,但受水分散性的困扰,限制了其在生物环境中的使用.
  • 目前用于提高水的稳定性的方法,例如与 (3-glycidyloxypropyl) trimethoxysilane (GOPS) 进行化学交联,往往会降低电性能.

研究的目的:

  • 开发一种简单有效的方法来提高PEDOT:PSS薄膜的水稳定性,用于生物电子应用.
  • 研究热处理对PEDOT:PSS.的稳定性和电性质的影响.
  • 探索热处理的潜力,以制造PEDOT:PSS.的3D微结构.

主要方法:

  • PEDOT:PSS的薄膜在短时间内 (约2分钟) 经过高温 (>150°C) 烤.
  • 水的稳定性在体外和体外长时间 (>20天) 评估.
  • 测量了体积电容,并与化学交联的薄膜进行了比较.
  • 聚焦的秒激光被用来应用热能,直接对3D微观结构进行建模.

主要成果:

  • 经过热处理的PEDOT:PSS薄膜表现出与化学交联薄膜相比的水稳定性.
  • 在体外和体外条件下,热处理保持了20多天的薄膜性能.
  • 消除绝缘交叉连接器导致体积电容增加了三倍.
  • 使用5秒激光实现了3D PEDOT:PSS微结构的直接图案设计.

结论:

  • 高温,短时间烤是一种有效的方法,以实现生物电子学PEDOT:PSS薄膜的水稳定性.
  • 与化学交叉连接方法相比,热处理提供了优越的体积电容.
  • 这种制造技术与现有的制造工作流程和各种基板兼容,有利于在生物电子学中快速采用.
  • 该方法使PEDOT:PSS的精确3D模式成为可能,扩大了其应用潜力.