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作为有机电化学晶体管半固体电解质的eutectogels

Yizhou Zhong¹, Naroa Lopez-Larrea², Marta Alvarez-Tirado²

¹Organic Bioelectronics Laboratory, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.

Chemistry of materials : a publication of the American Chemical Society

|March 4, 2024

概括

欧特基凝显著增强有机电化学晶体管 (OECT) 的可穿戴生物传感. 这些新的凝电解质为电生理学探针提供了卓越的稳定性和信号质量,性能优于传统的水凝.

科学领域:

材料科学材料科学材料科学
电子电子电子电子电子电子
生物医学工程生物医学工程

背景情况:

有机电化学晶体管 (OECT) 是有希望的检测由于高放大弱的生物信号.
虽然OECT经常使用水性电解质,但固体类凝是可穿戴电生理学探针的理想选择.
凝电解质类型和成分对OECT性能的影响尚不清楚.

研究的目的:

为了研究不同凝电解质 (水凝,eutectogels,iongels) 对OECT性能的影响.
为了确定特定电解质的最佳设备设计考虑因素.
评估OECT与eutectogel电解质的稳定性和信号质量,用于生理监测.

主要方法:

使用三种凝电解质类型制造和测试OECT:水凝,eutectogels和iongels.
暂时和稳定状态设备性能的表征.
使用长时间 (5小时和30天) 模拟心电图 (ECG) 记录来评估操作稳定性.

主要成果:

尤特克特凝,特别是那些含有聚糖1,3-二甲酸甘油二烯酸盐和胆化1,3-二醇深溶解剂的尤特克特凝,在水凝和凝上表现出优越的性能.
基于eutectogel的增强模式OECT在连续和长期记录期间显示出异常的运行稳定性,没有信号噪声比 (SNR) 变化.
与商用基于水凝的设备相比,eutectogel OECT产生了更高的ECG信号幅度和SNR.

结论:

欧特基凝是OECT的高效半固体电解质.
这些发现支持在可穿戴设备中使用eutectogels来进行强大和长时间的生理信号监测.
基于eutectogel的OECT在皮肤电生理学的当前技术上取得了重大进展.

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