In this paper, we polymerized 1,4-bis(3-phenylquinoxalin-2-yl)benzene unit with DPP and isoindigo units to produce four new polymers, and deeply investigate the influence of DPP and isoindigo units on the semiconductor characteristics, band gap, and orientation properties of these polymers. The semiconductor characteristics are measured through flexible organic field effect transistors OFET fabricated by a homemade desktop 3D printer. The polymer with thiophene based DDP (P2) exhibits the narrowest band gap, both edge-on & face-on orientation and highest mobility up to 0.50 cm2 V−1 s−1. The results also prove our success to lower the threshold of fabricating 3D printed OFET devices.

中文翻译：

---

1,4-双（3-苯基喹喔啉-2-基）苯类聚合物半导体的3D打印OFET

在本文中，我们将1,4-双（3-苯基喹喔啉-2-基）苯单元与DPP和异靛蓝单元聚合生成了四种新聚合物，并深入研究了DPP和异靛蓝单元对半导体特性，带隙的影响。以及这些聚合物的取向特性。半导体特性通过自制台式3D打印机制造的柔性有机场效应晶体管OFET进行测量。具有基于噻吩的DDP（P2）的聚合物显示出最窄的带隙，边沿和面朝取向以及最高迁移率，最高可达0.50 cm2 V-1 s-1。结果也证明我们成功降低了制造3D打印OFET设备的门槛。