Design, synthesis, and application in OFET of a small molecule based on π-expanded fused diketopyrrolopyrrole

Diketopyrrolopyrrole (DPP) and its derivatives, as electron deficient units, are widely used as building blocks in organic field-effect transistors, obtaining high performance. However, further modification of the DPP structure is crucial for the development of organic semiconductors. In this work, an FDPP is synthesized and characterized. The results show that FDPP exhibited not only a good planar core structure with a good conjugation system, but also strong aggregation in the solid state. As a consequence, FDPP presents p-type behavior with a hole mobility of similar to 9.7 x 10-3 cm2 V-1 s-1. This study suggests that FDPP is a promising electron deficient unit for high performance semiconductors.

Automated summary

In this study, a new organic semiconductor FDPP with a good core structure and aggregation is synthesized and characterized, exhibiting high performance.