High brightness circularly polarized electroluminescence from conjugated polymer F8BT induced by chiral binaphthyl-pyrene,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.)

High brightness circularly polarized electroluminescence from conjugated polymer F8BT induced by chiral binaphthyl-pyrene
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2020-09-21 , DOI: 10.1039/d0tc04039h
Xueyan Zhang _{1,

2,

3,

4,

5} , Zhaoran Xu _{1,

2,

3,

4,

5} , Yu Zhang _{1,

2,

3,

4,

5} , Yiwu Quan _{1,

2,

3,

4,

5} , Yixiang Cheng _{2,

3,

4,

5,

6}

Affiliation

Chiral organic polymers have considerable potential in solution-processable circularly polarized organic light emitting diodes (CP-OLEDs) due to their simple, low cost and large-area processing. Achiral conjugated poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(benzo[2,1,3]-thiadiazol-4,8-diyl)] (F8BT) is a donor–acceptor copolymer with superior characteristics including its ability to uniformly disperse chiral dopants and form homogeneous and smooth films. This paper describes the design and development of blue-emission chiral enantiomers R-/S-3 bearing pyrene groups as fluorophores and 2,2′-methylenedioxy-1,1′-binaphthalene moieties as chiral sources. Enantiomers R-/S-3 exhibit high thermal properties, outstanding photoluminescence properties and sufficient solubility in common organic reagents. The CP-OLEDs using R-/S-3 as the blue emission emitting layer show excellent efficiency, high brightness, and low turn-on voltage in non-doped OLEDs. Moreover, we further employed achiral conjugated fluorescent polymer F8BT, blended with blue-emitting chiral dopants (R-/S-3), as the device emitting layer. The CP-OLEDs based on blends of F8BT + 10% R-/S-3 showed low turn-on voltage (V_on = 4.1 V), excellent current efficiencies (4.19 cd A⁻¹ for F8BT + 10% R-3 and 4.06 cd A⁻¹ for F8BT + 10% S-3), and high brightness (21797.8 cd m⁻² for F8BT + 10% R-3 and 20572.6 cd m⁻² for F8BT + 10% S-3). To our knowledge, this is, to date, the best device performance using blends of achiral fluorescent polymers and chiral inducers in solution-processable CP-PLEDs. The outcomes obtained in this study can provide us with a valuable reference for future studies on the induced CPL-active device design.

中文翻译：

手性联萘并py诱导共轭聚合物F8BT的高亮度圆偏振电致发光

手性有机聚合物由于其简单，低成本和大面积加工而在可溶液加工的圆偏振有机发光二极管（CP-OLED）中具有相当大的潜力。非手性缀合聚[（9,9-二- ñ -octylfluorenyl芴-2,7-二基） - ALT - （苯并[2,1,3]噻二唑-4,8-二基）]（F8BT）是一种供体具有优异特性的受体共聚物，包括能够均匀分散手性掺杂剂并形成均质和光滑膜的能力。本文介绍了bearing基为荧光团，2,2'-亚甲基二氧基-1,1'-联萘部分为手性来源的蓝色发射手性对映体R- / S -3的设计和开发。对映体R- / S -3具有高的热性能，出色的光致发光性能以及在常见有机试剂中的足够溶解度。在非掺杂的OLED中，使用R- / S -3作为蓝色发射层的CP-OLED表现出出色的效率，高亮度和低导通电压。此外，我们还采用了与发射蓝光的手性掺杂剂（R- / S -3）共混的非手性共轭荧光聚合物F8BT作为器件发射层。基于F8BT + 10％R- / S -3的共混物的CP-OLED显示低的开启电压（V _on = 4.1 V），出色的电流效率（F8BT + 10％的电流为4.19 cd A ^-1R -3和4.06 cd A^-1（对于F8BT + 10％ S -3）和高亮度（21797.8 cd m^-2对于F8BT + 10％ R -3和20572.6 cd m^-2对于F8BT + 10％ S -3）。据我们所知，迄今为止，这是在溶液可加工CP-PLED中使用非手性荧光聚合物和手性诱导剂的混合物的最佳器件性能。这项研究中获得的结果可以为我们对诱导CPL有源器件设计的未来研究提供有价值的参考。

更新日期：2020-10-17

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