基于平面手性伪间位-[2.2]对环芳烷的纳米级碳大环化合物。
Nanosized Carbon Macrocycles Based on a Planar Chiral Pseudo Meta-[2.2]Paracyclophane.
作者信息
He Jing, Yu Mohan, Pang Maofu, Fan Yanqing, Lian Zhe, Wang Ying, Wang Wenguang, Liu Yajun, Jiang Hua
机构信息
College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029, P. R. China.
出版信息
Chemistry. 2022 Mar 1;28(13):e202103832. doi: 10.1002/chem.202103832. Epub 2022 Feb 10.
Structural designs combining cycloparaphenylenes (CPPs) backbone with planar chiral [2.2]paracyclophane ([2.2]PCP) lead to optical-active chiral macrocycles with intriguing properties. X-ray crystal analysis revealed aesthetic necklace-shaped structures and size-dependent packages with long-range channels. The macrocycles exhibit unique photophysical properties with high fluorescence quantum yield of up to 82 %, and the fluorescent color varies with ring size. In addition, size-dependent chiroptical properties with moderately large CPL dissymmetry factor of 10 and CPL brightness in the range of 30-40 M cm were observed.
将环对亚苯基（CPPs）主链与平面手性[2.2]对环芳烷（[2.2]PCP）相结合的结构设计，可产生具有有趣性质的光学活性手性大环化合物。X射线晶体分析揭示了美观的项链状结构以及具有长程通道的尺寸依赖性堆积。这些大环化合物表现出独特的光物理性质，荧光量子产率高达82%，且荧光颜色随环大小而变化。此外，还观察到尺寸依赖性的手性光学性质，其圆偏振发光（CPL）不对称因子适中，为10，CPL亮度在30 - 40 M cm范围内。
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