A spiroacridine-based thermally activated delayed fluorescence emitter for high-efficiency and narrow-band deep-blue OLEDs

Huang, Yong; Jia, Mengjiao; Li, Chuan; Yang, Yang; He, Yuling; Luo, Yanju; Huang, Yan; Zhou, Liang; Lu, Zhiyun

doi:10.1039/d4cc00154k

Chem. Commun.

2024

DOI: 10.1039/d4cc00154k

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A spiroacridine-based thermally activated delayed fluorescence emitter for high-efficiency and narrow-band deep-blue OLEDs

Yong Huang,

Mengjiao Jia,

Chuan Li

et al.

Abstract: A novel deep-blue thermally activated delayed fluorescence molecule of SAC-BOC was reported, which possesses a relatively rigid molecular structure and an appropriate energy level alignment. The device based on this...

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Narrow‐Band Emission of Asymmetric 1,3‐Substituted Pyrene‐Based Deep‐Blue Emitters and Application in OLEDs

Liu,

Jin,

Zhang

et al. 2024

Advanced Optical Materials

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High‐efficiency organic blue light‐emitting materials with narrow‐band emission are fundamental components for constructing high color purity and high resolution in high‐performance organic light‐emitting diode (OLED) devices. Herein, new pyrene‐based blue emitters (8–10) with narrow‐band emission are synthesized by asymmetrically introducing biphenyl and triphenylamine units at the 1‐ and 3‐positions of pyrene, respectively. Due to the steric effect and through‐space conjugation, the synergistic effects of both groups not only boost these emitters 8–10 (CIEy < 0.11) with aggregation‐induced emission (AIE) characteristics and high fluorescence quantum yield (>0.68), but also endow narrow full width at half maxima (FWHM) emission (≤36 nm) in the crystallized state (FWHM ≤ 55 nm in the film state). The EL spectra of pyrene‐based 8–10 in nondoped OLEDs exhibit blue emission with a maximum emission (λmax em) in the range of 448–453 nm (CIEy ≤ 0.12). The compounds 8–10 in doped‐OLEDs show a blue emission with a λmax em in the range of 443–445 nm and CIEy ≤ 0.08, with FWHM emission of 57–61 nm. The compound 10‐based doped OLED displays an impressive EL performance with a maximum brightness of 9756 cd m−2 and a maximum external quantum efficiency of 2.58%.

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Narrow‐Band Emission of Asymmetric 1,3‐Substituted Pyrene‐Based Deep‐Blue Emitters and Application in OLEDs

Liu,

Jin,

Zhang

et al. 2024

Advanced Optical Materials

View full text Add to dashboard Cite

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Modification of thermally activated delayed fluorescence emitters comprising fluorinated acridan–quinazoline and spiroacridan–quinazoline moieties for efficient green OLEDs

Szu,

Chen,

et al. 2024

J. Mater. Chem. C

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An Efficient Approach to Narrow the Emission Band of Pyrene-Based Emitters

Xie,

Li,

Liu

et al. 2024

Chinese Journal of Organic Chemistry

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A spiroacridine-based thermally activated delayed fluorescence emitter for high-efficiency and narrow-band deep-blue OLEDs

Abstract: A novel deep-blue thermally activated delayed fluorescence molecule of SAC-BOC was reported, which possesses a relatively rigid molecular structure and an appropriate energy level alignment. The device based on this...

Cited by 3 publications

References 29 publications

Narrow‐Band Emission of Asymmetric 1,3‐Substituted Pyrene‐Based Deep‐Blue Emitters and Application in OLEDs

Narrow‐Band Emission of Asymmetric 1,3‐Substituted Pyrene‐Based Deep‐Blue Emitters and Application in OLEDs

Modification of thermally activated delayed fluorescence emitters comprising fluorinated acridan–quinazoline and spiroacridan–quinazoline moieties for efficient green OLEDs

An Efficient Approach to Narrow the Emission Band of Pyrene-Based Emitters

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