一个骨架随机化策略,用于高性能状芳香聚合物
Quanfeng Zhou1, Cheng Liu1, Jinlun Li1
1College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China. xcliu3@gzu.edu.cn.
Materials horizons
|November 9, 2023
概括
结合聚合物 (CPs) 的骨随机化改善了溶解度和结晶度,克服了有机电子学中的一个关键挑战. 这导致有机场效应晶体管 (OFET) 的性能显著提高.
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:
- 在有机场效应晶体管 (OFET) 中优化电荷传输需要平衡结合聚合物 (CP) 的溶液可加工性和薄膜结晶性.
- 传统方法往往会在溶解度和结晶度之间产生反向关系,这构成了重大挑战.
研究的目的:
- 开发一种结合聚合物,同时提高可溶性和结晶性.
- 调查骨随机化对聚合物特性和OFET性能的影响.
主要方法:
- 使用骨随机化策略与para-azaquinodimethane (p-AQM) 和oligothiophenes合成了一种类素供体结合聚合物PA4T-Ra.
- 将PA4T-Ra与常规聚合物同类进行比较,以评估可溶性,结晶性和晶格障碍.
- 在环境空气条件下制造和测试PA4T-Ra基OFET.
主要成果:
- 随机聚合物PA4T-Ra在溶解度和结晶度上同时呈现出改善,聚合度中等,晶格障碍最小.
- 基于PA4T-Ra的OFET实现了3.11cm2V-1s-1的高孔流动性,大约是对照聚合物的30倍.
- 证明随机的聚合物骨干序列可以增强而不是降低结晶性.
结论:
- 骨随机化是设计高性能合聚合物的有效策略.
- 这种方法克服了溶解度-晶度的权衡,使先进的有机电子学成为可能.
- 开辟了控制聚合物聚合和开发下一代CP的新途径.
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