Calix[4]resorcinarene-cored hyper-structured molecules containing 1,8-naphthimide-9,9-dimethyl-9,10-dihydroacridine units and N, N-dicarbazolyl-3,5-benzene units for solution-processed orange red thermally activated delayed fluorescence OLEDs

被引：0

作者：

Zhang, Yunfei ^{[1
]}

Liu, Denghui ^{[2
,3
]}

Yao, Zhiru ^{[1
]}

Lu, Yufei ^{[1
]}

Yin, Xiaoyu ^{[1
]}

Zhao, Jingran ^{[1
]}

Wang, Kunlun ^{[1
]}

Liu, Yingliang ^{[1
]}

Xu, Shengang ^{[1
]}

Su, ShiJian ^{[2
,3
]}

Cao, Shaokui ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Mat Sci & Engn, Henan Key Lab Adv Nylon Mat & Applicat, Zhengzhou 450001, Peoples R China

[2] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China

[3] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China

来源：

ORGANIC ELECTRONICS | 2023年 / 122卷

基金：

中国国家自然科学基金;

关键词：

Red emitter; Thermally activated delayed fluorescence; (TADF); Solution-processable; Hyper -structured molecule (HSM); Self; -host; DEEP-RED; EMITTERS; PERFORMANCE;

D O I：

10.1016/j.orgel.2023.106915

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Now, it is still a formidable challenge to design and synthesize solution-processable thermally activated delayedfluorescence (TADF) red emitters for organic light-emitting diodes (OLEDs). In this work, 1,8-naphthimide-9,9dimethyl-9,10-dihydroacridine units (NDMAC) and N,N-dicarbazolyl-3,5-benzene (mCP) units were bound to calix [4]resorcinarene (CRA) core to construct hyper-structured molecule (HSM) though two-step azide-alkyne "click" reaction. The HSMs, CRA-NDMAC(X)-mCP(100-X) (X = 0, 12.5, 25, 50, 75, 87.5, or 100), showed good solubilities, high thermal stabilities and good film-forming properties. Meanwhile, they also inherited the photophysical and electrochemical properties of the functional units due to the flexible inert linkage. The non-doped devices with spin-coating CRA-NDMAC(X)-mCP(100-X) as the emitting layer showed orange red to red emission with the peak wavelength from 600 nm to 630 nm. Among them, CRA-NDMAC(25)-mCP(75)-based device showed the maximum external quantum (EQEmax) of 1.6% with the peak wavelength at 612 nm, indicating that CRANDMAC(X)-mCP(100-X) could serve as a good candidate for solution-processable self-host TADF red emitter. More importantly, the design and synthesis strategy of CRA-NDMAC(X)-mCP(100-X) could provide a new simple strategy for the solution-processable TADF emitter.

引用

页数：9