从光学活跃的X形分子的聚合诱导的辐射基于平面合 [2.2] 环旋
Keishi Jikuhara1, Ryo Inoue1, Yasuhiro Morisaki2
1Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo, 669-1330, Japan.
Scientific reports
|December 19, 2023
概括
这项研究引入了一种具有平面奇拉 [2.2] 环旋和o-碳单元的新型光学活性分子,在固态材料中表现出聚合诱导的发射和循环极化发光.
科学领域:
- 有机化学 有机化学
- 材料科学是一种材料科学.
- 光物理学的光学物理学
背景情况:
- 光学活性分子对于开发先进光学材料至关重要.
- 同时实现强循环极化发光 (CPL) 和聚合诱导发光 (AIE) 仍然是一个挑战.
- 结合像paracyclophanes这样的刚性奇拉单元可以影响分子包装和光学特性.
研究的目的:
- 合成一种新的 π 堆叠分子,将平面奇拉 [2.2] 环旋和 o 碳酸单位结合起来.
- 研究该分子的光物理性质,包括聚合诱导发射 (AIE) 和循环极化发光 (CPL).
- 探索这个分子在固态应用中的潜力,以提高光学性能.
主要方法:
- 一个 π 堆叠分子的合成,其中包括平面利的 [2.2] 环和 o 碳酸部分.
- 在溶液和聚合状态下的光物理特征,包括辐射光谱学.
- 研究混合溶剂和固态矩阵 (PMMA) 中的CPL特性.
- 使用时间依赖密度函数理论 (TD-DFT) 的计算研究.
主要成果:
- 合成的分子在聚合状态 (H2O/THF混合物) 和固态 (PMMA) 中表现出强烈的排放.
- 由于随机分子间方向,在聚合状态下观察到弱CPL.
- 清晰的CPL是在PMMA薄膜中实现的,该薄膜含有1%的分子.
- 在TD-DFT计算中,成功地重现了观察到的圆形二元化和CPL特性.
结论:
- 这种新型分子成功地整合了AIE和CPL属性.
- 固态内置,特别是在PMMA矩阵中,增强了CPL观测.
- 这些发现为设计先进的性发光材料提供了途径.
相关概念视频
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