Structure and Photophysical Properties of 1,1,2,2-Tetra(1-anthryl)ethane: A C(sp3)--C(sp3) Bond Substituted with Four Anthracene Units
Structure and Photophysical Properties of 1,1,2,2-Tetra(1-anthryl)ethane: A C(sp3)--C(sp3) Bond Substituted with Four Anthracene Units
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1,1,2,2-四(1-蒽基)乙烷的结构和光物理性质：四个蒽单元取代的C(sp3)--C(sp3)键
DOI：
10.1002/cplu.202100447
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发表时间：
2021
期刊：
影响因子：
3.4
通讯作者：
S. Toyota
中科院分区：
文献类型：
--
作者：
S. Aoki;K. Wakamatsu;M. Yamashina;E. Tsurumaki;S. Toyota
通过二(1-蒽基)酮的 McMurry 偶联合成了包含四个蒽单元的标题芳香族化合物作为氢化产物，收率 65%。 X射线分析和DFT计算表明，该分子形成C2对称结构，其关于C(sp3)−C(sp3)单键的a构象。将该化合物的紫外/可见光谱和荧光光谱与蒽、二(1-蒽基)甲烷和1,2-二(1-蒽基)乙烷进行了比较。荧光光谱在 450 nm 处显示出宽发射带，在 21 ns 处具有较长的寿命，与其他参考化合物相比，这可归因于准分子型发射。借助非共价相互作用图和构象分析，从分子结构的角度讨论了特征光物理性质。
The title aromatic compound comprising four anthracene units was synthesized by the McMurry coupling of di(1‐anthryl) ketone as a hydrogenated product in 65 % yield. The molecule forms aC2symmetric structure with theapconformation about the C(sp3)−C(sp3) single bond, as revealed by X‐ray analysis and DFT calculations. The UV/vis and fluorescence spectra of this compound were compared with those of anthracene, di(1‐anthryl)methane, and 1,2‐di(1‐anthryl)ethane. The fluorescence spectrum showed a broad emission band at 450 nm having a long lifetime at 21 ns, which was assignable to an excimer‐type emission, in contrast to the other reference compounds. The characteristic photophysical property is discussed in terms of the molecular structure with the aid of the noncovalent interaction plots and the conformational analysis.