Integration of fine-tuned chiral donor with hybrid long/short-range charge-transfer for high-performance circularly polarized electroluminescence

Yin, Xiaojun; Huang, Haoxin; Li, Nengquan; Li, Wendi; Mo, Xuechao; Huang, Manli; Chen, Guohao; Miao, Jingsheng; Yang, Chuluo

doi:10.1039/d3mh02146g

Mater. Horiz.

2024

DOI: 10.1039/d3mh02146g

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Integration of fine-tuned chiral donor with hybrid long/short-range charge-transfer for high-performance circularly polarized electroluminescence

Xiaojun Yin,

Haoxin Huang,

Nengquan Li

et al.

Abstract: The synergistic integration of a fine-tuned chiral donor with a hybrid long/short-range charge-transfer mechanism offers an accessible pathway to construct highly efficient circularly polarized emitters. Consequently, a notable dissymmetry factor...

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Cited by 4 publications

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Synergistic Modulation of Excited State Ingredients and Chiroptical Activity for High‐Performance Pure‐Green Circularly Polarized Electroluminescence

Huang,

Li,

et al. 2024

Adv Funct Materials

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The integration of chiral elements within a multiple resonance (MR) motif affords a prospective avenue to construct satisfying emitters tailored for state‐of‐the‐art circularly polarized organic light–emitting diodes (CP‐OLEDs). However, the concurrently realizing of both high luminescence efficiency and favorable dissymmetry factors (gPL) still remains a formidable challenge, particularly when aligning with the requirement of high color purity. Herein, a dual‐pronged approach is proposed to reconcile such trade‐offs by directly fusing a secondary chiral donor onto the MR scaffold, thereby facilitating a hybrid short/long‐range charge‐transfer with fine‐tuned compositions. Theoretical calculations unveil the pronounced impact of the chiral donor on meticulously refining the characteristics of excited states, therefore yielding a considerable gPL of 3.3 × 10−3, along with a high fluorescence quantum yield of 0.97, and a rapid reverse intersystem crossing rate of 3.06 × 105 s−1 in one embodiment. Leveraging these merits, electroluminescence devices incorporating them as chiral dopants exhibit exceptional performance, showcasing a peak external quantum efficiency of 36.6% and remarkable Commission Internationale de L'Eclairage coordinates of (0.19, 0.71), which represent one of the most notable achievements among pure‐green CP‐OLEDs.

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Synergistic Modulation of Excited State Ingredients and Chiroptical Activity for High‐Performance Pure‐Green Circularly Polarized Electroluminescence

Huang,

Li,

et al. 2024

Adv Funct Materials

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Recent progress in circularly polarized multi-resonance thermally activated delayed fluorescence materials for organic light-emitting diodes

Jiang,

Ai,

Jin

et al. 2024

Sci. China Chem.

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Enhanced chiroptical activity for narrow deep-blue emission in axial chiral frameworks via three-dimensional interlocking

Mo,

Chen,

et al. 2024

Chem. Sci.

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Integration of fine-tuned chiral donor with hybrid long/short-range charge-transfer for high-performance circularly polarized electroluminescence

Abstract: The synergistic integration of a fine-tuned chiral donor with a hybrid long/short-range charge-transfer mechanism offers an accessible pathway to construct highly efficient circularly polarized emitters. Consequently, a notable dissymmetry factor...

Cited by 4 publications

References 63 publications

Synergistic Modulation of Excited State Ingredients and Chiroptical Activity for High‐Performance Pure‐Green Circularly Polarized Electroluminescence

Synergistic Modulation of Excited State Ingredients and Chiroptical Activity for High‐Performance Pure‐Green Circularly Polarized Electroluminescence

Recent progress in circularly polarized multi-resonance thermally activated delayed fluorescence materials for organic light-emitting diodes

Enhanced chiroptical activity for narrow deep-blue emission in axial chiral frameworks via three-dimensional interlocking

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