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阐明设计规则,以便在基于二氧化基的替代性聚合物中实现增强的固态电荷传输
Abigail A Advincula1,2,3, Amalie Atassi1, Shawn A Gregory1
1School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
ACS applied materials & interfaces
|July 14, 2023
概括
含有EDOT的共聚合物P(OE3)-E由于增强的兴奋剂和改进的微观结构,表现出优越的电导率. 这项研究强调了EDOT在设计先进导电聚合物系统中的重要性.
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
- 固态物理 固态物理
背景情况:
- 基于二氧化的交替共聚物被研究了它们的电荷传输特性.
- 研究了不同基 (DMP,EDOT,PheDOT) 对共聚合物特性的影响.
研究的目的:
- 为了研究氧化ProDOT基共聚合物的固态电荷传输特性.
- 为了将结构和兴奋剂特性与电导率相关联.
- 了解EDOT整合在提高导电性的作用.
主要方法:
- 合成P(OE3) -D,P(OE3) -E和P(OE3) -Ph共聚物.
- 在固定的剂度 (5毫米FeTos3) 下测量电导率.
- 紫外-对-红外和X射线光谱仪用于评估兴奋剂和氧化.
- 宽角X射线散射 (WAXS) 用于结构分析 (准晶度,π-π堆叠).
- 应用半局部化运输 (SLoT) 模型进行参数计算.
主要成果:
- 电导率在9至195S cm-1之间,其中P(OE3)-E具有最高的电导率.
- P(OE3)-E对兴奋剂和氧化程度的敏感性最高.
- P(OE3)-E显示出较低的准晶度和较小的π-π堆叠距离,表明更好的局部排序和重叠.
- 对SLoT模型的分析显示,对于P(OE3) -E.而言,电子频段更宽,载波比更高.
结论:
- 加入EDOT显著提高了基于ProDOT的共聚合物的电导率.
- 在P(OE3) -E中提高的导电性归因于增强的兴奋剂,更高的载体比率和有利的微观结构 (低晶性,良好的π-π重叠).
- 这些发现为设计未来高性能导电聚合物提供了有价值的结构属性关系.
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