用于有机电子的三维网络组装的三叶轮
Dong Meng1,2, Huiting Fu1,3,2, Chengyi Xiao1,2
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China.
Journal of the American Chemical Society
|July 22, 2016
概括
两种新型的联烯染料,即三烯六化物 (TPH) 和取消的TPH (TPH-Se),具有出色的电子传输特性. 这些染料在太阳能电池中实现了高功率转换效率,证明了它们在先进的光电子应用中的潜力.
科学领域:
- 材料科学
- 有机电子
- 太阳能发电
背景情况:
- 结合的有机分子对于开发高效的光电子设备至关重要.
- 由于其优异的电子接受特性和稳定性,烯二氧化物 (PBIs) 被广泛研究.
- 开发具有增强性能的新型PBI衍生品仍然是一个活跃的研究领域.
研究的目的:
- 合成和描述两种新的C3对称结合烯染料:三烯六化物 (TPH) 和取消的TPH (TPH-Se).
- 研究TPH和TPH-Se的结构,光学和电子特性.
- 评估基于接受器的太阳能电池中的TPH和TPH-Se的性能.
主要方法:
- 有效的合成TPH和TPH-Se.
- 用光谱分析 (UV-Vis吸收) 来确定光学特性.
- 单晶X射线衍射以阐明分子和晶体结构.
- 单晶晶体的制造和测试以评估电子的移动性.
- 基于TPH和TPH-Se的太阳能电池的构造和特征.
主要成果:
- 无论是TPH还是TPH-Se都表现出广泛而强烈的吸收 (300-600 nm) 和适当的LUMO水平 (-3.8 eV).
- TPH显示了一个扭曲的螺旋配置和一个具有强大的π-π相互作用的3D网络.
- 由于Se·O相互作用,TPH-Se具有更扭曲的螺旋和更紧的3D网络.
- 这两种材料在单晶晶体中表现出良好的电子传输能力.
- 基于TPH和TPH-Se的太阳能电池实现了分别8.28%和9.28%的高功率转换效率.
结论:
- 合成的TPH和TPH-Se染料对太阳能电池应用具有有利的光电子特性.
- 独特的分子结构和分子间相互作用有助于提高它们的性能.
- 这些新型烯衍生物为高效的有机太阳能电池提供了有前途的材料.
相关概念视频
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The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
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01:32Assembly of Complex Microtubule Structures
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02:50Spindle Assembly
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01:22Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)
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Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the microtubule-mediated pathway – collectively contributing to form a robust spindle apparatus.
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01:24Sequence Networks of Rotating Machines
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