Transformation from triple helicene to double helicene embedding adjacent stereogenic carbon atoms and axial stereogenicity

Abstract

Transformation of triple helicene (TH) to double helicene (DH) with adjacent stereogenic carbon atoms and axial stereogenicity was achieved by the unexpected conjugate addition to the central aromatic ring of...

Difluorobenzimidazole-decorated helical perylene diimide dimers for high-performance n-type organic field-effect transistors

“…34,35 Also these materials are more soluble and less likely to excessively aggregate compared to flat aromatics, allowing for solutionbased processing of materials. [36][37][38][39][40][41][42][43][44] In recent years, most PDI2 derivatives with electronic mobilities have been reported with mobilities varying from 10 À4 to 0.08 cm 2 V À1 s À1 under different deposition methods. 33,[44][45][46][47] Besides, Zhaohui Wang's group reported a high electric mobility of 0.16 cm 2 V À1 s À1 .…”

“…[36][37][38][39][40][41][42][43][44] In recent years, most PDI2 derivatives with electronic mobilities have been reported with mobilities varying from 10 À4 to 0.08 cm 2 V À1 s À1 under different deposition methods. 33,[44][45][46][47] Besides, Zhaohui Wang's group reported a high electric mobility of 0.16 cm 2 V À1 s À1 . 48 Therefore, the systematic study of PDI2 and PDI2 derivatives is of great significance for the design of higher performance n-type channel materials.…”