In:
Chemistry – A European Journal, Wiley, Vol. 28, No. 5 ( 2022-01-24)
Kurzfassung:
We report the Negishi coupling based synthesis of 1,2,3‐tri(9‐anthryl)benzene derivatives containing three radially arranged anthracenes in a π‐cluster. In the crystalline state of the unsubstituted derivative, intermolecular π–π and CH–π interactions between the anthracene units drive the formation of the two‐dimensional packing structure. Owing to though‐space π‐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 Å 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.
Materialart:
Online-Ressource
ISSN:
0947-6539
,
1521-3765
DOI:
10.1002/chem.202104245
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2022
ZDB Id:
1478547-X
