Layered H-UiO-66@IL composites with both intraparticle micropores, interparticle mesopores, and multiple active sites were prepared. A key aspect of the technique was the addition of deionized water during solvothermal synthesis, which rapidly nucleated layered nanoparticles. A multifunctional, flexible, and stable polyacrylonitrile (PAN)-based membrane was successfully constructed by incorporating H-UiO-66 nanoparticles, modified by ionic liquid (1-allyl-3-butylimidazole tetrafluoroborate), into polymers with macromolecular chains under mild, controlled conditions. The resulting film exhibited excellent dielectric, ferroelectric, and mechanical properties due to the multilayer fiber design. Furthermore, the PAN matrix showed a higher content (97.41 %) of planar zigzag conformations, enhancing the piezoelectric properties. The composite film demonstrated ultra-high sensitivity (10.98 V/N) and an ultra-low detection limit of 3.5 × 10⁻⁴ N. In addition, the film passed 1,800-cycle stability tests and maintained its initial output value across various environmental conditions. This flexible piezoelectric sensor shows significant potential for aiding deaf and mute individuals in sign language or breathing communication.

中文翻译：

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一种基于提高具有微孔/中孔的夹层结构压电层性能的柔性可穿戴传感器，用于与聋哑人通信


制备了具有颗粒内微孔、颗粒间介孔和多个活性位点的层状 H-UiO-66@IL 复合材料。该技术的一个关键方面是在溶剂热合成过程中添加去离子水，从而快速成核分层纳米颗粒。通过在温和、受控的条件下将离子液体（1-烯丙基-3-丁基咪唑四氟硼酸酯）改性的 H-UiO-66 纳米颗粒掺入具有大分子链的聚合物中，成功构建了一种多功能、柔性和稳定的聚丙烯腈 （PAN） 基膜。由于多层纤维设计，所得薄膜表现出优异的介电、铁电和机械性能。此外，PAN 矩阵显示出更高含量 （97.41 %） 的平面锯齿形构象，增强了压电性能。复合膜表现出超高灵敏度 （10.98 V/N） 和 3.5 × 10⁻⁴ N 的超低检出限。此外，该薄膜还通过了 1,800 次循环的稳定性测试，并在各种环境条件下保持了其初始产值。这种灵活的压电传感器在帮助聋人和哑人进行手语或呼吸交流方面显示出巨大的潜力。