调节电荷运输行为基于异的聚合物从平衡的双极到n型通过键形成优先通过键形成
Xiaoli Liang1, Xinyi Wang2, Zihan Xiong1
1Key Laboratory of Flexible Optoelectronic Materials and Technology, Ministry of Education, School of Optoelectronic Materials & Technology, Jianghan University, Wuhan, 430056, P. R. China.
Macromolecular rapid communications
|March 17, 2025
概括
键形成平面聚合物框架,增强新结合聚合物中的电子流动性. 这种结构变化改善了有机场效应晶体管 (OFET) 中的n型传输.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 有机电子 有机电子
背景情况:
- 键是一种强大的非共价相互作用,用于构建平面聚合物框架.
- 结合聚合物对于有机电子应用至关重要,例如有机场效应晶体管 (OFET).
研究的目的:
- 合成和表征新的结合聚合物,其中包含键.
- 研究键形成对聚合物平面性和电荷传输特性的影响.
- 评估这些聚合物在OFET设备中的性能.
主要方法:
- 5,5'-dimethoxy isoindigo (5MeOII) 与pyrazine (Pyr) 的联合聚合形成了P(5MeOII-Pyr).
- 脱甲基化P ((5MeOII-Pyr) 产生P ((5OHII-Pyr),引入键.
- 紫外线吸收光谱用于研究电子特性和平面性.
- 热分析以评估材料的稳定性.
- 制造和描述OFET设备来比较电荷传输.
主要成果:
- 5OHII-Pyr) 呈现紫外线吸收的红色转移,这是由于结合增强的骨干平面性.
- 这两种聚合物都表现出高热稳定性 (分解温度~400°C).
- 在OFET中,P ((5OHII-Pyr) 表明电子流动性和抑制孔流动性增加了十倍,表明n型偏好.
结论:
- 形成键有效地平面化了联聚合物骨干.
- 平面化增强了LUMO移位,显著改善了OFET中的电子运输.
- 开发的P ((5OHII-Pyr) 是一个有前途的n型半导体材料用于有机电子.
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