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用于亲密生物接口的生物粘合性聚合物半导体和晶体管
Nan Li1,2, Yang Li1, Zhe Cheng2
1Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA.
Science (New York, N.Y.)
|August 10, 2023
概括
研究人员开发了一种新的生物粘合性聚合物半导体, 这项创新提高了生物电子设备的稳定性和性能,以更好地记录生物系统的信号.
科学领域:
- 生物材料科学
- 生物电子
- 聚合物化学
背景情况:
- 生物电子设备需要与软生物组织直接接触才能有效传输信号.
- 目前在晶体管类生物电子设备中使用的半导体材料对湿组织的粘附性较差,限制了接口的稳定性和符合性.
- 这种不稳定性阻碍了可植入或可穿戴生物电子系统的可靠和长期性能.
研究的目的:
- 设计一种新型的生物粘合性聚合物半导体,能够与湿生物组织形成稳定且合规的接口.
- 通过改进接口特性来提高晶体管类生物电子设备的性能和可靠性.
- 在高质量的电生理记录中证明开发材料的实用性.
主要方法:
- 双网聚合物结构的制造,其中结合了生物粘合性刷聚合物和氧化还原活性半导体聚合物.
- 由此产生的半导体薄膜的粘附性质,电荷载体移动性,伸展性和生物相容性的描述.
- 将生物粘性半导体集成到完全生物粘性晶体管传感器中,用于电生理记录.
主要成果:
- 开发的半导体薄膜对湿组织表面具有快速和强的粘附性.
- 该材料具有很高的电荷载体移动性 (~1 cm2/Vs),高延展性和良好的生物相容性.
- 完全生物粘合的晶体管传感器从隔离的老鼠心脏和体内老鼠肌肉中获得了高质量和稳定的电生理记录.
结论:
- 一种新型的生物粘合性聚合物半导体已成功开发,解决了生物电子中的组织粘合的关键挑战.
- 这种材料的独特特性使其具有稳定性,并为更强大,更可靠的生物电子设备铺平了道路.
- 这种进步具有显著的潜力,可以在各种生物医学应用中改善信号传导和记录能力,包括体内监测.
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