Planar Chiral [2.2]Paracyclophane-Based Thermally Activated Delayed Fluorescent Materials for Circularly Polarized Electroluminescence,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 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.)

Planar Chiral [2.2]Paracyclophane-Based Thermally Activated Delayed Fluorescent Materials for Circularly Polarized Electroluminescence
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-05-20 , DOI: 10.1021/acsami.1c04779
Chen Liao ₁ , Yu Zhang ₁ , Shang-Hui Ye ₂ , Wen-Hua Zheng ₁

Affiliation

This work describes the construction of a novel planar chiral [2.2]paracyclophane-based thermally activated delayed fluorescence (TADF)-active molecule with circularly polarized luminescence (CPL). The combination of the bulky planar chiral phenoxazinephane (PXZp) donor based [2.2]paracyclophane and triazine acceptor enables the highly efficient luminescence performances and excellent CPL properties. The enantiomers exhibit excellent TADF activities, the energy difference (ΔE_ST) between singlet and triplet of the molecule is only 0.03 eV. Notably, through solution-process, a yellow CP-OLEDs based on the molecule as the emitting layers displays high maximum brightness (L_max) up to 34 293 cd m^–2, maximum external quantum efficiency (EQE_max) up to 7.8% and remarkable CP-EL signal with g_EL factor up to 4.6 × 10^–3.

中文翻译：

用于圆偏振电致发光的平面手性 [2.2] 对环芳基热活化延迟荧光材料

这项工作描述了一种具有圆偏振发光 (CPL) 的新型平面手性 [2.2] 对环芳基热激活延迟荧光 (TADF) 活性分子的构建。庞大的平面手性吩恶嗪烷 (PXZp) 供体基于 [2.2] 对环烷和三嗪受体的组合使高效的发光性能和优异的 CPL 性能成为可能。对映异构体表现出优异的TADF活性，分子单线态和三线态之间的能量差（Δ E _ST）仅为0.03 eV。值得注意的是，通过溶液工艺，基于分子作为发光层的黄色 CP-OLED 显示出高达 34 293 cd m ^{–2 的}高最大亮度 ( L _max ) ，最大外量子效率 (EQE _max ) 高达 7.8% 和显着的 CP-EL 信号，g _EL因子高达 4.6 × 10 ^–3。

更新日期：2021-06-02

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南