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Modified-Release Drug Delivery Systems: Stimuli-Activated

Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also called...

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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
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多刺激响应导电水凝用于信息加密,解密和可穿戴传感器.

Yuyu Xue1, Xiaojuan Lai1,2, Fei Hong3

  • 1Shaanxi Key Laboratory of Chemical Additives for Light Industry, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, P. R. China.

ACS applied materials & interfaces
|October 14, 2025
PubMed
概括

研究人员开发了一种对温度,乙醇和盐有反应的新型导电水凝. 这种对刺激有反应的材料为在室温下先进的生物应用和信息加密提供了潜力.

关键词:
乙醇的响应能力 反应能力机械性能 机械性能 机械性能盐的响应性 盐的响应性传感性能 传感性能对刺激有反应的水凝.温度响应温度响应的时间

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科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物化学 聚合物化学
  • 智能材料是一种智能材料.

背景情况:

  • 响应刺激的水凝对于生物材料和人工智能至关重要.
  • 现有的水凝往往具有有限的响应因子和不良的响应能力.
  • 需要具有多刺激响应和导电性的先进水凝.

研究的目的:

  • 开发一种具有多刺激反应性的离子导电水凝.
  • 克服单回应因子的局限性和当前水凝的响应不良.
  • 在室温下创建用于信息加密/解密的材料.

主要方法:

  • 通过一方法合成了一个温度/乙醇/盐刺激响应导电水凝 (PPSD).
  • 使用SDS,NIPAm,PVA和SGA15作为盐溶剂中的原材料.
  • 集成的SDS用于低温灵敏度和高温灵敏单体用于双温度响应.

主要成果:

  • 通过受控的分子间相互作用实现了快速的双温度响应.
  • 通过可观察到的颜色变化,由于中断的分子间相互作用和改变的光散射,证明了乙醇和盐的刺激反应.
  • 水凝表现出极好的传感能力,归因于自由离子的定向迁移.

结论:

  • 开发的PPSD水凝具有出色的传输性能和多刺激反应能力.
  • 这种材料对生物材料,人工智能和信息安全的应用具有前景.
  • 这项研究突出了设计先进刺激响应导电水凝的新方法.