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Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
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MAPbBr3 量子点被封装在兰化物-MOF中,用于时间分辨率的多色动态防伪.

Jiachen Wang1, Zhenhua Gao2, Yajun Jia1

  • 1College of Chemistry, Beijing Normal University, Beijing, 100875, China.

Advanced materials (Deerfield Beach, Fla.)
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概括

在金属有机框架中使用量子点的新型动态光学材料提供先进的防伪解决方案. 这些材料为安全的信息加密提供了不可预测的,时间解决的多色变化.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 光学是什么?光学是什么?光学是什么?

背景情况:

  • 多色动态光学材料对于防伪和信息加密至关重要.
  • 它们产生不可预测,时间变化的光学信息的能力是关键.

研究的目的:

  • 开发一种新的方法,用于时间解决的多色动态防伪应用程序.
  • 为了利用矿量子点 (QD) 的量子限制效应,嵌入在化金属有机框架 (Ln-MOF) 中.

主要方法:

  • 在Ln-MOF中MAPbBr3量子点 (QD) 的现场生长.
  • 利用量子束效应来实现动态色彩变化.
  • 通过改变紫外线激发波长来调节发射颜色.

主要成果:

  • 在QD维度的时间变化导致了动态发光色彩变化.
  • 通过改变紫外线激发波长来调整发射颜色,增加空间区分能力.
  • 该系统展示了时间解决的不可预测性,持续的发光和多维的防伪特性.

结论:

  • 开发的MAPbBr3@Eu-MOF适用于先进的图形编码和智能防伪.
  • 这种方法推进了动态光学防伪材料的领域.
  • 这些发现突出了基于动态材料性能的新型安全特性的潜力.