Novel Divinyl-Flanked Diketopyrrolopyrrole Polymer, Based on a Dimerization Strategy for High-Performance Organic Field-Effect Transistors

oleh: Jinyang Chen, Jie Zhou, Na Li, Yubing Ding, Shiwei Ren, Minfeng Zeng

Format: Article
Diterbitkan: MDPI AG 2023-11-01

Deskripsi

In this communication, we report a novel acceptor structural unit, TVDPP, that can be distinguished from classical materials based on TDPP structures. By designing a synthetic route via retrosynthetic analysis, we successfully prepared this monomer and further prepared polymer P2TVDPP with high yield using a Stille-coupling polymerization reaction. The polymer showed several expected properties, such as high molecular weight, thermal stability, full planarity, small π−π stacking distance, smooth interface, and so on. The absorption spectra and energy levels of the polymer were characterized via photochemical and electrochemical analysis. The organic field-effect transistor (OFET), which is based on P2TVDPP, exhibited excellent carrier mobility and an on/off current ratio of 0.41 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup> and ~10<sup>7</sup>, respectively, which is an important step in expanding the significance of DPP-based materials in the field of optoelectronic devices and organic electronics.