导电性聚合物纳米粒子具有内在的水性分散性,用于导电性水凝
Joshua Tropp1, Caralyn P Collins2, Xinran Xie1
1Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA.
Advanced materials (Deerfield Beach, Fla.)
|September 8, 2023
概括
研究人员开发了新的导电纳米粒子,酸结晶PEDOT:PSS (ncrys-PEDOTx),用于先进的生物电子材料. 这些粒子具有高导电性和优良的分散性,使其能够无地集成到医疗器械的水凝中.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
背景情况:
- 导电性水凝对于将生物组织与电子设备接口至关重要,因为它们具有独特的离子电子导电特性.
- 现有的生物电子导电填充剂往往缺乏可扩展性,生物相容性或与水性水凝系统的兼容性.
- 需要先进的填充剂,可以很容易地纳入用于生物电子应用的水凝.
研究的目的:
- 开发本质上可分散的,高导电性纳米粒子,用于生物电子水凝.
- 为了证明这些新型纳米粒子的可扩展性和易于加工.
- 为了评估这些纳米粒子在印刷生物医学结构中的性能.
主要方法:
- 简单,可扩展的非溶剂诱导相分离方法,用于从商业PEDOT:PSS.中处理酸结晶的PEDOT:PSS纳米粒子 (ncrys-PEDOTx).
- 在没有添加剂或超声波的情况下将ncrys-PEDOTx纳入各种水性生物材料溶液和微观立体石刻树脂中.
- 粒子导电性和分散性的表征,以及复杂的生物医学结构的打印.
主要成果:
- 在ncrys-PEDOTx纳米粒子中达到高达410 S cm-1的高导电性.
- 在没有表面活性剂的情况下,在高负载下证明了ncrys-PEDOTx在水凝中的显著分散性和均结合.
- 通过使用高达10% ncrys-PEDOTx 负载的树脂,成功打印了具有精细特征 (< 150μm) 的复杂生物医学结构.
结论:
- 开发的ncrys-PEDOTx纳米粒子为创建先进的软有机生物电子材料提供了可扩展,生物兼容和插即用的解决方案.
- 这些纳米粒子克服了传统导电填充剂的局限性,使复杂的生物电子设备更容易制造.
- 这些发现为改善生物电子和医疗应用中的基于水凝的接口铺平了道路.
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