Fluorenone imide/cyanated fluorenone imide and diketopyrrolopyrrole-based dual-acceptor polymers for n-type organic thin-film transistors†

IF 2.5 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY New Journal of Chemistry Pub Date : 2025-03-20 DOI:10.1039/D5NJ00602C

Yongxin Hou, Xiage Zhang, Tao Li, Zhicai Chen, Jie Yang, Shiyang Shao, Xugang Guo and Weiyou Zhou

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Abstract

It is of great significance to develop high performance n-type polymer semiconductors (PSCs), which are essential for fabricating various p–n junction organic electronic devices. In this work, based on commonly used acceptor unit diketopyrrolopyrrole (DPP) and recently developed acceptors fluorenone imide (FOI)/cyanated fluorenone imide (FCNI), we prepared two new dual-acceptor (A1–A2) type PSCs, PFOI-DPP and PFCNI-DPP. Benefitting from improved components of the acceptor moieties in their backbones, the two polymers exhibited low-lying frontier molecular orbital energy levels. Theoretical simulation revealed that they also have a highly planar backbone. Ultimately, organic thin-film transistors based on the two polymers showed unipolar n-type characteristics with a maximum electron mobility of 0.55 cm² V⁻¹ s⁻¹.

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用于 n 型有机薄膜晶体管的芴酮亚胺/氰基芴酮亚胺和二酮吡咯并用聚合物†

高性能n型聚合物半导体（PSCs）是制造各种p-n结有机电子器件所必需的材料。本文以常用的受体单位二酮吡咯（DPP）为基础，结合近年来新开发的受体氟芴酮亚胺(FOI)/氰化芴酮亚胺（FCNI），制备了两种新的双受体（A1-A2）型psc: PFOI-DPP和PFCNI-DPP。得益于其骨架中受体部分成分的改进，这两种聚合物表现出较低的前沿分子轨道能级。理论模拟表明，它们也具有高度平面的主干。最终，基于这两种聚合物的有机薄膜晶体管表现出单极n型特性，最大电子迁移率为0.55 cm2 V−1 s−1。

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