期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 28, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202104245
关键词
pi-clusters; anthracene; CH-pi interactions; excited-state dynamics; photoisomerization
资金
- JSPS KAKENHI [JP17K17849, JP20K05475, JP21H05395, JP21H01888]
In this study, 1,2,3-tri(9-anthryl)benzene derivatives containing three radially arranged anthracenes in a pi-cluster were synthesized using Negishi coupling. The unique electronic properties and excited-state dynamic behavior of these derivatives, such as exciton localization/delocalization, were investigated.
We report the Negishi coupling based synthesis of 1,2,3-tri(9-anthryl)benzene derivatives containing three radially arranged anthracenes in a pi-cluster. In the crystalline state of the unsubstituted derivative, intermolecular pi-pi and CH-pi interactions between the anthracene units drive the formation of the two-dimensional packing structure. Owing to though-space pi-conjugation between anthracene units, the substances have unique electronic properties. The excited-state dynamic behavior occurring between the three anthracene moieties, such as exciton localization/delocalization, was elucidated by means of transient absorption measurements and quantum chemical calculations. Interestingly, even though the three anthracenes are closely oriented with approximately 3.0 angstrom between their C-9 positions, exciton localization on two anthracene units is energetically favorable because of the flexible nature of the radially arranged aromatic rings.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据