4.7 Article

Highly efficient red thermally activated delayed fluorescence emitters by manipulating the molecular horizontal orientation

期刊

MATERIALS CHEMISTRY FRONTIERS
卷 5, 期 7, 页码 3209-3215

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qm00155h

关键词

-

资金

  1. Natural Science Foundation of China [51903159, 91833304]
  2. Shenzhen Science and Technology Program [KQTD20170330110107046, JCYJ20190808120419167]
  3. China Postdoctoral Science Foundation [2019TQ0198]

向作者/读者索取更多资源

This study designed and synthesized two red TADF emitters with horizontal orientation, among which PXZ-AQPhPy achieved a high external quantum efficiency of 19.6%, providing a simple and effective design strategy for selectively promoting the horizontal orientation of red TADF emitters.
Developing highly efficient red thermally activated delayed fluorescence (TADF) emitters remains a formidable challenge due to strict molecular design principles. In this contribution, two red emitters PXZ-AQPy and PXZ-AQPhPy with high structural rigidity and linear configurations are designed and synthesized based on phenoxazine (PXZ) as a donor and acenaphtho[1,2-b]quinoxaline (AQ) as an acceptor. Both molecules with horizontal orientation are endowed with TADF and aggregation-induced emission (AIE) properties. By elongating the acceptor segment via phenyl decoration, PXZ-AQPhPy exhibits higher horizontal ratios of the emitting dipole orientation (Theta|| = 85%), while the emission characteristics are almost unaltered. Consequently, the PXZ-AQPhPy based device achieves a high external quantum efficiency of 19.6% with an emission peak at 610 nm. This work provides a simple and effective design strategy to selectively promote the horizontal orientation of red TADF emitters.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据