基于兰他尼德的金属有机框架,用于光学信息加密的上转换/下移排放
Wanjun Yang1, Jiabo Chen1, Jiwei Li1
1Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China.
Inorganic chemistry
|July 14, 2025
概括
研究人员开发了一种新的Yb-IPA金属有机框架 (MOF),表现出兰化物向上转换发光. 这种新的MOF系统能够进行下调和上调转换,对先进的光学防伪和信息加密应用有很大的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 纳米技术 纳米技术
背景情况:
- 基于兰化物的金属有机框架 (Ln-MOFs) 主要被认为是降低发光率.
- 在Ln-MOF中实现上转换发光仍然是材料科学中的一个重大挑战.
研究的目的:
- 设计和合成一种新型的Yb-IPA MOF,能够进行向上转换的发光.
- 探索Yb-IPA MOFs与其他类离子 (Tb3+,Eu3+,Ho3+) 共同合的潜力,以实现多模发光.
- 调查这些MOF在信息安全方面的应用,特别是在防伪和加密方面.
主要方法:
- 使用异酸和Yb3+盐合成Yb-IPA MOF.
- 合成的MOF因其发光性质的表征.
- 用Tb3+,Eu3+和Ho3+离子对Yb-IPA MOF进行编码.
- 分别在紫外线和近红外激发下研究下移和上转换发光.
主要成果:
- 成功合成了一种Yb-IPA MOF,在980nm激发下通过合作式上转换在498nm呈现上转换发光.
- 在Yb-IPAMOFs中实现Tb3+,Eu3+和Ho3+的特征上转化排放.
- 在编码的MOF中展示下移和上转换的发光,使多模发射成为可能.
结论:
- 开发的Yb-IPA MOF系统成功地实现了兰化物向上转换发光.
- 与Tb3+,Eu3+和Ho3+的配合扩大了发光能力,创建了一个多模发射系统.
- 这种MOF系统对先进的光学防伪和信息加密技术具有重大潜力.
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