在动态共价控制下,单波长可见光诱导的刚性stilbene的可逆异构.
Indigo M Bekaert1, Maxime A Siegler2, Sander J Wezenberg1
1Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
Organic letters
|March 31, 2025
概括
刚性stilbene的形式化允许可见光异构化和动态 imine 形成. 这使得使用单一光源实现可逆E/Z异构化控制,在分子切换中提供了新的应用.
科学领域:
- 摄影化学的使用.
- 有机合成 有机合成
- 超分子化学 超分子化学
背景情况:
- 刚性stilbene衍生物是光色分子,在分子开关中具有潜在的应用.
- 传统的stilbene异构化通常需要紫外线,限制了实际应用.
- 控制异构化和开发刺激响应系统仍然是一个关键的挑战.
研究的目的:
- 为了研究形式化对刚性stilbene的光异构化特性的影响.
- 探索形式化刚性stilbene在动态共价化学中用于光控制的同位素切换的潜力.
- 为观察到的现象提供结构和电子洞察力.
主要方法:
- 形成的刚性stilbene衍生物的合成.
- 通过紫外线对光谱学监测的光异构化研究.
- 核磁共振 (H NMR) 光谱用于结构分析.
- 单晶X射线衍射用于结构阐明.
- 时间依赖密度函数理论 (TD-DFT) 计算用于电子结构分析.
主要成果:
- 甲基化转移了刚性stilbene的光异构化从紫外线到可见光.
- 引入一个 imine 连接使动态的共价化学和光响应的吸收率变化成为可能.
- 同样的可见光波长在形式化和胺衍生物中诱导了相反的异构化 (E → Z和Z → E).
- 通过操纵 imine 形成和水解来实现可逆异构体控制.
结论:
- 甲基化硬stilbene为可见光驱动的光异构化提供了一条途径.
- 动态胺基形成为光控制的分子切换提供了一个机制.
- 该系统展示了开发先进分子设备和响应性材料的潜力.
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