半导体聚合物的纳乙 (4,8-胺-1,5-二胺) 构件
Brian J Eckstein1, Ferdinand S Melkonyan1, Eric F Manley1,2
1Department of Chemistry and the Materials Research Center, and the Argonne-Northwestern Solar Energy Research Center, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|September 27, 2017
概括
研究人员开发了一种用于先进聚合物半导体的新型纳二4,8-氨-1,5-二胺基 (NBA) 构件. 区域连接性对聚合物结构和性能产生重大影响,使平面设计中的双极电荷传输成为可能.
科学领域:
- 材料科学
- 聚合物化学
- 有机电子
背景情况:
- 开发新型构件对于提升聚合物半导体性能至关重要.
- 了解分子结构和电子特性之间的关系是设计高效有机电子材料的关键.
研究的目的:
- 为聚合物半导体引入一个新的纳二4,8-氨-1,5-二胺基 (NBA) 构件.
- 研究区域连接对基于NBA的聚合物的电子和结构性质的影响.
主要方法:
- 计算建模用于预测区域连接对聚合物骨干扭曲和π结合的影响.
- 使用光学,电化学和X射线衍射技术合成和描述基于NBA的分子和共聚物.
- 测量电荷传输以评估半导体性能.
主要成果:
- 在2,6-或3,7-NBA位置上的区域连接可显著调节聚合物骨干扭曲,分子内 π 结合和聚合.
- 基于3,7-NBA的聚合物 (P1) 具有扭曲的骨干和较差的半导体性能.
- 基于2,6-NBA的聚合物 (P2-P4) 采用平面结构并表现出双极电荷传输特征.
- 在平面的NBA聚合物中,电子和孔移动性 (μe和μh) 达到0.39和0.32cm2/ (V·s).
结论:
- 在确定聚合物半导体性能方面,NBA构件的区域连接性是一个关键因素.
- 基于平面NBA的聚合物显示出有前途的双极电荷传输,适用于各种有机电子应用.
- 开发的NBA构件为设计高性能双极聚合物半导体提供了多功能平台.
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