Delayed Fluorescence and Amplified Chirality via Modified Substitution Position for Deep-red Circularly Polarized Organic Light Emitting-diodes

ZHU Lixun ¹LIU Dan ²WU Kaiwen ¹XIE Guohua ³ZHAO Zheng ¹TANG Ben Zhong⁴

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作者信息

1. School of Science and Engineering,Shenzhen Institute of Aggregate Science and Technology,The Chinese University of Hong Kong,Shenzhen(CUHK-Shenzhen),Shenzhen 518172,P.R.China
2. Department of Chemistry,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction,The Hong Kong University of Science and Technology,Hongkong 999077,P.R.China
3. The Institute of Flexible Electronics(Future Technologies),Xiamen University,Xiamen 361005,P.R.China
4. School of Science and Engineering,Shenzhen Institute of Aggregate Science and Technology,The Chinese University of Hong Kong,Shenzhen(CUHK-Shenzhen),Shenzhen 518172,P.R.China;Department of Chemistry,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction,The Hong Kong University of Science and Technology,Hongkong 999077,P.R.China
折叠

Abstract

Developing easily accessible deep-red/near-infrared circularly polarized emitters for practical organic light-emitting diodes remains a significant challenge.Here,a practical strategy has been proposed for developing deep-red circularly polarized delayed fluorescent emitters based on a novel chiral acceptor platform.By changing triphenylamine(TPA)substitution position from para to meta,R/S-M-TBBTCN demonstrated thermally activated delayed fluorescence(TADF)properties with a delayed lifetime of 6.6 ps that R/S-P-TBBTCN doesn't have.Furthermore,R/S-M-TBBTCN showed a 65 nm red-shift in emission and a 10-fold enhancement in asymmetry factor(glum),compared with R/S-P-TBBTCN.The solution-processed nondoped circularly polarized organic light-emitting diodes(CP-OLEDs)based on R-M-TBBTCN display deep-red emission and 2.2％external quantum efficiency.

Key words

Amplified chirality/Deep-red circularly polarized organic light emitting-diode/Binaphthol based chiral acceptor

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基金项目

National Natural Science Foundation of China(52273197)

National Natural Science Foundation of China(52333007)

Project of the Shenzhen Key Laboratory of Functional Aggregate Materials,China(ZDSYS20211021111400001)

Project of the Science Technology Innovation Commission of Shenzhen Municipality,China(JCYJ2021324134613038)

Project of the Science Technology Innovation Commission of Shenzhen Municipality,China(KQTD20210811090142053)

Project of the Science Technology Innovation Commission of Shenzhen Municipality,China(JCYJ20220818103007014)

Project of the Science Technology Innovation Commission of Shenzhen Municipality,China(GJHZ20210705141810031)

Project of the Innovation and Technology Commission,China(ITC-CNERC14SC01)

出版年

2024

高等学校化学研究(英文版)

吉林大学

高等学校化学研究(英文版)

CSTPCD

影响因子：0.871

ISSN：1005-9040

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