Printed Organic Electrochemical Transistors for Detecting Nutrients in Whole Plant Sap
Printed Organic Electrochemical Transistors for Detecting Nutrients in Whole Plant Sap
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DOI：
10.1002/aelm.202100853
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发表时间：
2021-12-28
影响因子：
6.2
通讯作者：
Whiting, Gregory L.
中科院分区：
文献类型：
--
作者：
Strand, Elliot J.;Bihar, Eloise;Whiting, Gregory L.
能够快速、广泛监测植物营养水平的低成本生物传感器对于更好地了解植物健康和改善精准农业决策至关重要。在这项工作中，完全印刷的离子选择性有机电化学晶体管（OECTs），可以检测整个植物汁液中的常量营养素浓度进行了描述。钾是大多数植物中浓度最高的阳离子，被选为目标分析物，因为它在植物生长和发育中起着关键作用。离子传感器表现出高电流（170 mu A dec（-1））和电压（99 mV dec（-1））灵敏度，以及低检测限（10 x 10（-6）m）。这些OECT生物传感器可用于确定钾浓度的原料汁液和汁液样的水环境中表现出预期的生理范围内的阳离子在植物中的对数线性响应。这些印刷设备的性能使其能够用于农业和生态应用中的高通量植物健康监测。
Low-cost biosensors that can rapidly and widely monitor plant nutritional levels will be critical for better understanding plant health and improving precision agriculture decision making. In this work, fully printed ion-selective organic electrochemical transistors (OECTs) that can detect macronutrient concentrations in whole plant sap are described. Potassium, the most concentrated cation in the majority of plants, is selected as the target analyte as it plays a critical role in plant growth and development. The ion sensors demonstrate high current (170 mu A dec(-1)) and voltage (99 mV dec(-1)) sensitivity, and a low limit of detection (10 x 10(-6) m). These OECT biosensors can be used to determine potassium concentration in raw sap and sap-like aqueous environments demonstrating a log-linear response within the expected physiological range of cations in plants. The performance of these printed devices enables their use in high-throughput plant health monitoring in agricultural and ecological applications.