Facile access to deep red/near-infrared emissive AIEgens for efficient non-doped OLEDs

被引：115

作者：

Lee, Will W. H. ^{[1
]}

Zhao, Zheng ^{[1
,2
]}

Cai, Yuanjing ^{[3
]}

Xu, Zeng ^{[3
]}

Yu, Ying ^{[1
]}

Xiong, Yu ^{[2
]}

Kwok, Ryan T. K. ^{[1
]}

Chen, Yue ^{[3
]}

Leung, Nelson L. C. ^{[1
]}

Ma, Dongge ^{[3
]}

Lam, Jacky W. Y. ^{[1
]}

Qin, Anjun ^{[3
]}

Tang, Ben Zhong ^{[1
,2
,3
]}

机构：

[1] Hong Kong Univ Sci & Technol, Div Life Sci & Biomed Engn,State Key Lab Nanosci, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Dept Chem,Hong Kong Branch,Inst Mol Funct Mat, Kowloon, Hong Kong, Peoples R China

[2] HKUST Shenzhen Res Inst, South Area, 9 Yuexing 1st RD,Hitech Pk, Shenzhen 518057, Peoples R China

[3] South China Univ Technol, NSFC Ctr Luminescence Mol Aggregates, SCUT HKUST Joint Res Lab, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

来源：

CHEMICAL SCIENCE | 2018年 / 9卷 / 28期

基金：

中国博士后科学基金; 美国国家科学基金会;

关键词：

AGGREGATION-INDUCED EMISSION; ACTIVATED DELAYED FLUORESCENCE; INTRAMOLECULAR CHARGE-TRANSFER; LIGHT-EMITTING-DIODES; ROLL-OFF; AIE LUMINOGENS; RED; CONJUGATION; DESIGN; DYES;

D O I：

10.1039/c8sc01377b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Notwithstanding the huge demand in bio-imaging and optoelectronics, the construction of highly emissive deep red/near infrared (DR/NIR) organic luminogens is still a big challenge because a narrow energy gap generally leads to low photoluminescence quantum yield. It is even more difficult to afford DR/NIR emitters in the solid state due to the aggregation caused quenching (ACQ) effect. In this work, we found that the direct attachment of a tetraphenylethylene substituted arylamine to the electron accepting 2,1,3-benzothiadiazole produces DR/NIR AIE luminogens with bright emission facilely and efficiently. And the emission wavelengths could be tuned from the red to the DR/NIR region by regulating the variety of the substituents. The long emission wavelength and high photoluminescence quantum yield of these AIEgens are ascribed to the effective intramolecular charge transfer and the suppressed intramolecular motion. Furthermore, non-doped OLEDs based on one of the AIEgens showed an EL emission at 684 nm with a large radiance of 5772 mW Sr-1 m(-2) and an impressive external quantum efficiency (EQE) of 1.73%.

引用

页码：6118 / 6125

页数：8

共 58 条

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