具有截然不同的AIE特性的天然素异构体:机制和应用
Shan-Shan Chen1,2,3, Haoran Wang4,5, Bo Wu4
1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, PR China.
ACS central science
|May 30, 2023
概括
研究人员发现了两种新的无转子聚合诱导排放光原体 (AIEgens),灵感来自药用植物. 这些AIEgens表现出独特的光特性,使得无洗的线粒体成像.
科学领域:
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
- 生物医学成像技术 生物医学成像技术
背景情况:
- 聚合诱导排放发光剂 (AIEgens) 对光电子和生物医学至关重要.
- 目前的AIEgen设计依赖于将旋转机与光体结合起来,从而限制了结构多样性.
研究的目的:
- 从自然来源发现新的,无旋转器的AIEgens.
- 在AIE中研究库马林异构体的结构-性质关系.
- 探索AIEgens在生物成像中的新应用.
主要方法:
- 从 *Toddalia asiatica* 根中分离和表征化合物.
- 谱分析 (光,UV-Vis) 用于研究聚合诱导的辐射.
- 机制调查涉及质子溶剂和晶体研究.
- 应用测试用于线粒体成像.
主要成果:
- 确定了两种无旋转器的AIEgens,即5-methoxyseselin (5-MOS) 和6-methoxyseselin (6-MOS).
- 5-MOS表现出独特的对水敏感光,在水性介质中排放减少,在晶体中排放增加.
- 6-MOS显示通过分子内运动限制 (RIM) 机制的常规聚合诱导的排放.
- 由于其对水敏感的光,5-MOS已成功应用于无洗的线粒体成像.
结论:
- 自然产品可以作为创新的无旋转器AIEgen设计的来源.
- 同位体中的微妙结构差异可以导致不同的光物理性质和AIE机制.
- 5-MOS为开发先进的生物成像剂提供了一个有前途的平台.
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