由可逆访问引导的分子开关可用于室温光和ESIPT光
Vyacheslav E Olennikov1,2, Valentina V Zvereva1, Vladimir V Kriventsov3
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, Russia.
Inorganic chemistry
|April 2, 2025
概括
本研究介绍了基于复合物的发光分子开关,它们通过分子几何学和外部刺激控制的双重发射 (光和光),从而实现可逆色变化.
科学领域:
- 材料化学 材料化学
- 摄影化学的使用.
- 超分子化学 超分子化学
背景情况:
- 发光分子开关对于开发响应性材料至关重要.
- 控制分子系统中的排放途径仍然是一个重大挑战.
- 复合物为光物理研究提供了多功能协调环境.
研究的目的:
- 设计和合成新的复合物与基于基的联体.
- 为了研究由激发状态的分子内质子转移 (ESIPT) 和系统间交叉产生的双重发射特性.
- 通过外部刺激和相位转换探索可逆操纵的排放路径.
主要方法:
- 结晶复合物的合成和分离.
- 光谱分析 (UV-Vis吸收,光,光). 在光谱分析中,光线的
- 量子化学计算 (TD-DFT) 用于阐明排放机制.
- 研究阶段过渡和刺激反应行为.
主要成果:
- 设计的 Zn 复合体显示基于分子几何学的可调节发射.
- 在晶体阶段观察到鲜明的红色ESIPT光,在转移稳定的无形阶段观察到黄色光.
- 澄清了归因于取决于几何形状的兴奋状态过程的双重发射机制.
- 在暴露于特定溶剂 (CHCl3,Et2O) 时,证明了可逆相变和颜色变化.
结论:
- 开发的复合物作为具有双发射能力的有效发光分子开关发挥作用.
- 分子几何学在控制激发状态过程和辐射颜色方面发挥着关键作用.
- 光和光之间的可逆切换可以通过溶剂诱导的相位过渡来实现.
- 该材料显示出在视觉传感和响应式显示器中的应用潜力.
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