Flexible sensor based on molecular imprinting for simultaneous in situ detection of indole-3-acetic acid and salicylic acid in plants

文献类型： 外文期刊

第一作者： Liu, Ke

作者： Liu, Ke;Chen, Liping;Zhao, Chunjiang;Liu, Ke;Hou, Peichen;Pan, Dayu;Zhou, Yanan;Luo, Bin;Chen, Liping;Zhao, Chunjiang;Li, Aixue

作者机构：

关键词： Molecularly imprinted polymer; In situ; MXene; Laser-induced graphene; Flexible sensor; Electrochemical biosensor

期刊名称：TALANTA （ 影响因子：6.1； 五年影响因子：5.5 ）

ISSN： 0039-9140

年卷期： 2025 年 294 卷

页码：

收录情况： SCI

摘要： In plants, indole-3-acetic acid (IAA) and salicylic acid (SA) are critical for defense responses, making their simultaneous detection essential for understanding regulation mechanisms. This study developed a flexible laserinduced graphene (LIG) sensor enhanced with MXene nanosheets for improved conductivity and catalytic activity. A molecularly imprinted polymer (MIP) film, using chitosan (CS) as the monomer and IAA/SA as templates, was fabricated on the electrode surface. The MIP/MXene/LIG/PDMS sensor, with excellent flexibility for curved leaf surfaces, detected IAA and SA simultaneously in ranges of 5-100 mu M and 5-1000 mu M, with detection limits of 0.921 mu M and 1.677 mu M. Applied in situ to strawberry leaves under salt stress, this sensor offers promising applications in precision agriculture.

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