Ionogel sensor for reproducible detection of trace methamphetamine analogues

IF 7.4 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2026-01-09 DOI:10.1007/s40843-025-3860-0

Gonghai Yang (, ), Chonghao Xiong (, ), Ziyi Guo (, ), Junyao Zhang (, ), Chenshuang Pan (, ), Chenghao Wang (, ), Liqiong Zhang (, ), Jiaying Yun (, ), Lize Xiong (, ), Shiqi Zhang (, ), Yidong Zou (, ), Jie Yang (, ), Yanyan Fu (, ), Jia Huang (, )

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引用次数: 0

Abstract

Drug detection is highly important, yet reversible and highly sensitive sensing materials are still scarce. A novel ionogel sensor material, poly(ethylene glycol) diacrylate (PEGDA)/1-butyl-3-methylimidazole tetrafluoroborate, was developed for reproducible N-methylphenylethylamine (MPEA) detection. It was fabricated by immobilizing a flowable ionic liquid within a PEGDA network via UV curing. The immobilized ions retain mobility, enabling efficient ionic conduction. Integrated on a flexible poly(ethylene naphthalate) substrate, the sensor is fully transparent and flexible, showing over 72.6% transmittance in the visible spectrum. This allows it to be discreetly attached to surfaces for concealed detection. Using non-covalent interactions, the sensor achieves reproducible MPEA detection at sub ppb levels at room temperature, with a theoretical detection limit of 317 ppt. It also exhibits high selectivity and consistency. Ionic conductivity was confirmed through current voltage tests and impedance spectroscopy, and the sensing mechanism was clarified. The device performs reliably under bending, proving suitable for dynamic environments. With a Bluetooth module for wireless transmission, the sensor shows strong potential for practical and discreet drug monitoring in real world applications.

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可重复检测痕量甲基苯丙胺类似物的离子凝胶传感器

药物检测是非常重要的，但可逆和高灵敏度的传感材料仍然稀缺。制备了一种新型离子凝胶传感器材料聚乙二醇二丙烯酸酯(PEGDA)/1-丁基-3-甲基咪唑四氟硼酸盐，用于可重复检测n -甲基苯基乙胺（MPEA）。它是通过紫外光固化将可流动的离子液体固定在PEGDA网络中制备的。固定的离子保持迁移性，使有效的离子传导。该传感器集成在柔性聚（萘二甲酸乙酯）衬底上，具有完全透明和柔性，在可见光谱中透光率超过72.6%。这使得它可以被谨慎地附着在表面上进行隐蔽探测。利用非共价相互作用，该传感器在室温下实现亚ppb水平的重复MPEA检测，理论检测限为317 ppt。它还具有高选择性和一致性。通过电流电压测试和阻抗谱法确定了离子电导率，并阐明了离子电导率的传感机理。该装置在弯曲下性能可靠，适用于动态环境。该传感器具有蓝牙无线传输模块，在实际应用中显示出强大的实际和谨慎的药物监测潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.