通过原子工程策略对高流动性有机场效应晶体管进行处理异环中的晶体包装
Rong Zhang1, Wenhao Li1, Yuanhe Gu1
1Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Molecular Materials and Devices, Fudan University, Shanghai, 200438, China.
Angewandte Chemie (International ed. in English)
|February 25, 2025
概括
研究人员通过在异环中工程原子合成了新型环形有机半导体 (OSC). 硫化材料实现了创纪录的孔移动性,证明了先进光电子技术的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 超分子化学 超分子化学
背景情况:
- 开发高性能有机半导体 (OSC) 对光电子非常重要.
- 环状 (异质) 环烯具有潜力,但面临合成挑战和有限的材料多样性.
- 控制分子包装和分子间相互作用是提高OSC性能的关键.
研究的目的:
- 为了合成和研究一系列的共平面石墨素化异环烯 (NO,NS,NSE).
- 系统地阐明石化原子工程对这些环形OSCs属性的作用.
- 探索它们的超分子相互作用和光电子应用的潜力.
主要方法:
- 新型异环 (NO,NS,NSE) 的合成,具有长分支链.
- 单晶X射线衍射分析晶体包装和分子间相互作用.
- 测量电荷载体的移动性,以评估半导体性能.
- 对与C70.70的选择性上分子相互作用的研究.
主要成果:
- 硫化NS衍生品表现出最接近鱼骨晶体的包装,其π-π堆叠距离为3.11 Å.
- 在报告的环形OSC中,NS实现了3.13cm2V-1s-1的创纪录的高孔流动性.
- 融合的NSe衍生物,尽管缺乏分子间π-π相互作用,但由于边对面的Se...π和C-H...π相互作用,显示出第二高的移动性 (2.11 cm2V-1s-1).
- 观察到C70超分子结合常数的一个选择性趋势:NS < NO < NSe.
结论:
- 碳素原子工程显著影响 heterocycloarenes 的晶体包装和电荷运输特性.
- 该研究提供了对原子工程对这些新兴环形OSC的影响的系统理解.
- 这些发现为在先进的光电子设备中实践应用新型异环素铺平了道路.
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