conformationally adaptive macrocycles are described. This new type of conformationally adaptive macrocycle was constructed through Perkin reaction, followed by imidization. By changing the condensation partner as the linking unit, a family of conjugated macrocycles with different sizes of the cavity was synthesized, which provide a simple and modular synthetic strategy towards the conformationally adaptive macrocycles
描述了基于
芘的构象适应性大环化合物的合成、结构和性质。这种新型的构象适应性大环是通过珀
金反应构建的,然后是
酰亚胺化。通过改变缩合伙伴作为连接单元,合成了一系列具有不同腔尺寸的共轭大环,这为构象适应性大环提供了一种简单且模块化的合成策略。此外,大环通过翻转
芘亚基提供两个明确定义的构象,这是通过单晶 X 射线衍射分析明确确定的。构象相互转换势垒由密度泛函理论 (DFT) 计算确定。这个新的大环也表现出独特的性质,如汽色行为和聚集发射增强效应。此外,我们还研究了接头对所得大环产物的形状和光物理性质的影响。