在配合聚合物中的三重能量回转与悬挂光化复合物中的三重能量回转
Nicholas R Evans1, Lekshmi Sudha Devi, Chris S K Mak
1Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
Journal of the American Chemical Society
|May 18, 2006
概括
添加一个八甲基带显著提高了电色有机发光二极管的效率. 这种设计抑制了能量回转,提高了具有类似主机和客户端三重能量的设备的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 摄影化学的使用.
背景情况:
- 调查德克斯特三重体在电色有机发光二极管 (OLED) 中的能量转移.
- 使用发出红色的光的复合物和合的多聚合物.
- 检查直接 (无间隔) 与绑定的链接对能量传输的影响.
研究的目的:
- 了解链接器长度对OLED三重能量传输的影响.
- 优化光化复合物和多共聚合物的设计,以提高效率.
- 阐明这些系统中能量转移和反转移的机制.
主要方法:
- 合成无间隔和八甲基结合的烯单体,与复合物功能化.
- 通过苏苏基聚凝延长链,形成统计共聚合物.
- 使用X射线分析,光照和电测量进行表征.
主要成果:
- 没有间隙的单体表现出接近面对面的形状,促进了分子内三重体的能量转移.
- 带有八甲基的共聚合物显示出无间隔对应物效率的两倍.
- 连接成功地抑制了三胞胎从复合体向多支柱的逆转移.
结论:
- 整合一个八甲基链对于具有类似主机-客机三重能量的OLED高效率至关重要.
- 连接器设计是优化能量传输和设备性能的一个关键原则.
- 抑制三重反向传输对于OLED中高效的光非常重要.
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