AUTHOR=Li Jianhui , Ji Zhuoting , He Aihua , Zhang Haichang TITLE=Design, synthesis, and application in OFET of a small molecule based on π-expanded fused diketopyrrolopyrrole JOURNAL=Frontiers in Chemistry VOLUME=11 YEAR=2023 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2023.1280816 DOI=10.3389/fchem.2023.1280816 ISSN=2296-2646 ABSTRACT=

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 ∼9.7 × 10−3 cm2 V−1 s−1. This study suggests that FDPP is a promising electron deficient unit for high performance semiconductors.