A directly coupled dual emitting core based molecular design of thermally activated delayed fluorescent emitters,Journal of Materials Chemistry C

当前位置： X-MOL 学术 › J. Mater. Chem. C › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A directly coupled dual emitting core based molecular design of thermally activated delayed fluorescent emitters
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-11-03 00:00:00 , DOI: 10.1039/c7tc03133e
Hee-Jun Park _{1,

2,

3,

4} , Si Hyun Han _{1,

2,

3,

4} , Jun Yeob Lee _{1,

2,

3,

4}

Affiliation

New green thermally activated delayed fluorescence (TADF) materials built on a directly coupled dual emitting core based backbone structure were designed, synthesized, and applied as green dopants in TADF devices. An ortho-linkage between a carbazole or 3,6-di-tert-butylcarbazole donor and a triazine acceptor facilitated the TADF emission, and direct coupling of the two TADF emitting cores more than doubled the external quantum efficiency of the TADF devices. The TADF emitter based on the directly coupled dual emitting core design exhibited a green emission with a CIE coordinate of (0.23, 0.52) and a maximum external quantum efficiency of 20.8% compared with less than 10% efficiency of a conventional TADF emitter with the corresponding chemical structure.

中文翻译：

基于直接耦合双发射核的热活化延迟荧光发射体的分子设计

在直接耦合的基于双发射核的骨架结构上构建的新型绿色热激活延迟荧光（TADF）材料已被设计，合成，并作为绿色掺杂剂应用于TADF器件中。咔唑或3,6-二叔丁基咔唑供体与三嗪受体之间的邻位键合促进了TADF的发射，两个TADF发射核的直接耦合使TADF装置的外部量子效率提高了一倍以上。基于直接耦合双发射芯设计的TADF发射器显示出绿色发射，其CIE坐标为（0.23，0.52），最大外部量子效率为20.8％，而常规TADF发射器的效率不到10％。化学结构。

更新日期：2017-11-17

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11