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

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外文摘要：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.

外文关键词：

Amplified chiralityDeep-red circularly polarized organic light emitting-diodeBinaphthol based chiral acceptor

作者：

ZHU Lixun、LIU Dan、WU Kaiwen、XIE Guohua、ZHAO Zheng、TANG Ben Zhong

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作者单位：

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

The Institute of Flexible Electronics(Future Technologies),Xiamen University,Xiamen 361005,P.R.China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProject of the Shenzhen Key Laboratory of Functional Aggregate Materials,ChinaProject of the Science Technology Innovation Commission of Shenzhen Municipality,ChinaProject of the Science Technology Innovation Commission of Shenzhen Municipality,ChinaProject of the Science Technology Innovation Commission of Shenzhen Municipality,ChinaProject of the Science Technology Innovation Commission of Shenzhen Municipality,ChinaProject of the Innovation and Technology Commission,China

项目编号：

5227319752333007ZDSYS20211021111400001JCYJ2021324134613038KQTD20210811090142053JCYJ20220818103007014GJHZ20210705141810031ITC-CNERC14SC01

出版年：

2024

DOI：

10.1007/s40242-024-4123-4

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

年,卷(期)：2024.40(4)