基于三烯的捐赠者-受体共聚合物,具有明显的超分子组织
Xin Guo1, Sreenivasa Reddy Puniredd, Martin Baumgarten
1Max Planck Institute for Polymer Research, Mainz, Germany.
Journal of the American Chemical Society
|May 12, 2012
概括
研究人员为有机电子产品合成了P1和P2两种新型的捐赠者-接受器共聚合物. 尽管结构相似,P1没有显示负载传输,而P2实现了高孔移动性,突出显示了脊柱曲率对性能的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物化学 聚合物化学
背景情况:
- 捐赠者-接受器共聚合物对于有机电子设备至关重要.
- 子[2,1-b:3,4-b':5,6-c′′]三烯是一种新型的捐赠单位,具有调整聚合物特性的潜力.
- 了解结构属性关系是优化半导体性能的关键.
研究的目的:
- 合成和表征两种新型的供体-受体共聚合物 (P1和P2),其中包含一个独特的供体单元.
- 研究结构修改对超分子组织,薄膜微观结构和电荷传输特性的影响.
- 为了将聚合物骨干曲率与有机场效应晶体管 (OFET) 中的晶体管性能相关联.
主要方法:
- 提供者-接受者共聚合物P1和P2的合成.
- π-堆积距离和超分子组织的表征.
- 在场效应晶体管中制造和测试P1和P2.
- 使用计算或光谱方法分析聚合物骨干曲率.
主要成果:
- 由于盘状的捐赠单位,这两种聚合物都表现出小的π堆叠距离 (P1的0.35 nm,P2的0.37 nm).
- 与传统聚合物相比,P1显示出明显的高分子组织,而P2.
- 在OFET中没有观察到P1的收费运营商运输.
- P2表现出高达0.04厘米的显著孔移动性
结论:
- 聚合物骨干的曲率程度显著影响了超分子组织和电荷传输.
- 在P2中引入额外的 thiophene 单位诱导了一个曲率,增强了孔的移动性.
- 这些发现为通过控制聚合物架构来设计高性能有机半导体提供了关键的见解.
相关概念视频
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