基于Cucurbit[8]uril构建的室温光材料用于加密和防伪
Li Wu1, Shang-Wei Yuan1, Xing-Ying Wang1
1Guizhou Key Laboratory of Macrocyclic and Supramolecular Chemistry, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China.
概括
库库比特[8]乌里尔和化诺衍生物的新型超分子组合使长寿命的室温光成为可能. 这种材料适用于信息加密和防伪应用.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
- 光物理学的光学物理学
背景情况:
- 室温光 (RTP) 对于先进的光学应用至关重要.
- 开发稳定高效的RTP材料仍然是一个挑战.
- 超分子组件提供可调节的光物理特性.
研究的目的:
- 构建一个超分子组件,以增强室温光.
- 为了研究组件的光物理性质.
- 探索信息加密和防伪方面的应用.
主要方法:
- 使用库库比特[8]uril (Q[8]) 和6-化诺衍生物 (BI-BOH) 构建一个超分子组件.
- 1:2 Q[8]-BI-BOH组件的形成,加强系统间交叉 (ISC).
- 制造Q[8]-BI-BOH/聚乙烯醇 (PVA) 薄膜,并将光染料作为能量接受器.
主要成果:
- Q[8]-BI-BOH组件表现出较低的能量差距 (ΔEST = 0.03 eV),增强了ISC.
- 由此产生的薄膜显示了由于被抑制的非辐射过渡而长期存在的室温光 (τ = 0.128 s).
- 使用添加染料的能量转移允许可调节的后照色彩.
结论:
- 超分子组件通过宿主-客人相互作用和ISC有效地促进RTP.
- 该材料的可调节光度适用于信息加密和防伪.
- 这项工作扩大了发光材料的应用范围.
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