Textile Organic Electrochemical Transistors as a Platform for Wearable Biosensors.
Textile Organic Electrochemical Transistors as a Platform for Wearable Biosensors.
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DOI：
10.1038/srep33637
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发表时间：
2016-09-26
影响因子：
4.6
通讯作者：
Fraboni B
中科院分区：
文献类型：
--
作者：
Gualandi I;Marzocchi M;Achilli A;Cavedale D;Bonfiglio A;Fraboni B
鉴于医疗保健应用中生理参数的非侵入性和连续监测，可穿戴化学传感器的开发受到了广泛关注。本文描述了基于完全由导电聚合物 (PEDOT:PSS) 制成的有机电化学晶体管 (OECT) 的全纺织可穿戴化学传感器的开发。活性聚合物图案通过丝网印刷工艺沉积到织物中，从而使设备实际上“消失”在织物中。我们通过评估其在两种不同实验环境中的性能，证明了所提出的纺织品 OECT 作为开发化学传感器的平台的可靠性，该化学传感器能够实时检测各种氧化还原活性分子（肾上腺素、多巴胺和抗坏血酸）：i）理想的操作条件（即完全浸入电解质溶液中）； ii) 真实操作条件（即仅在纺织品传感器的一侧依次添加几滴电解质溶液）。 OECT 反应也在人造汗液中进行了测量，评估了如何可靠地使用这些传感器来检测体液中的生物标记物。最后，非常低的工作电位（<1 V）和吸收功率（〜10−4 W）使得这里描述的纺织OECT对于便携式和可穿戴应用非常有吸引力。
The development of wearable chemical sensors is receiving a great deal of attention in view of non-invasive and continuous monitoring of physiological parameters in healthcare applications. This paper describes the development of a fully textile, wearable chemical sensor based on an organic electrochemical transistor (OECT) entirely made of conductive polymer (PEDOT:PSS). The active polymer patterns are deposited into the fabric by screen printing processes, thus allowing the device to actually “disappear” into it. We demonstrate the reliability of the proposed textile OECTs as a platform for developing chemical sensors capable to detect in real-time various redox active molecules (adrenaline, dopamine and ascorbic acid), by assessing their performance in two different experimental contexts: i) ideal operation conditions (i.e. totally dipped in an electrolyte solution); ii) real-life operation conditions (i.e. by sequentially adding few drops of electrolyte solution onto only one side of the textile sensor). The OECTs response has also been measured in artificial sweat, assessing how these sensors can be reliably used for the detection of biomarkers in body fluids. Finally, the very low operating potentials (<1 V) and absorbed power (~10−4 W) make the here described textile OECTs very appealing for portable and wearable applications.
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