An Eight-Membered Ring Molecular Framework Based on Carbazole for the Development of Electroluminescent Materials DOI Creative Commons
Yan An,

Shipan Xu,

Xueping Du

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 716 - 716

Published: Feb. 5, 2025

The organic light-emitting diode (OLED) has been regarded as the most prominent product in current market of electronics, which attracted growing attention because their applications full-color displays and solid-state lighting. Organic materials that exhibit strong luminescence solid state constitute core position OLED. Extensive research efforts to probe structure luminescent have considerable conjugated fusion ring architecture. This is it can confer molecular rigidity helps inhibit intermolecular interactions non-radiative transitions, thus enhancing performance materials. Here, we use an efficient simple method construct eight-membered framework based on carbazole. Moreover, introduced groups with different electron-withdrawing abilities develop a series molecules. results show nonplanar suppresses fluorescence quenching caused by aggregation. As doping concentration increases, electroluminescence spectrum remains basically unchanged, indicating effectively suppress interaction. Notably, DCBz-pm exhibits deep blue emission Commission Internationale de l’Eclairage (CIE) coordinate (0.158, 0.046), nearly meets BT. 2020 standards. DCBz-CN device reaches maximum external quantum efficiency (EQE) 4.36%. These offer new design strategy for improving OLEDs.

Language: Английский

An Eight-Membered Ring Molecular Framework Based on Carbazole for the Development of Electroluminescent Materials DOI Creative Commons
Yan An,

Shipan Xu,

Xueping Du

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 716 - 716

Published: Feb. 5, 2025

The organic light-emitting diode (OLED) has been regarded as the most prominent product in current market of electronics, which attracted growing attention because their applications full-color displays and solid-state lighting. Organic materials that exhibit strong luminescence solid state constitute core position OLED. Extensive research efforts to probe structure luminescent have considerable conjugated fusion ring architecture. This is it can confer molecular rigidity helps inhibit intermolecular interactions non-radiative transitions, thus enhancing performance materials. Here, we use an efficient simple method construct eight-membered framework based on carbazole. Moreover, introduced groups with different electron-withdrawing abilities develop a series molecules. results show nonplanar suppresses fluorescence quenching caused by aggregation. As doping concentration increases, electroluminescence spectrum remains basically unchanged, indicating effectively suppress interaction. Notably, DCBz-pm exhibits deep blue emission Commission Internationale de l’Eclairage (CIE) coordinate (0.158, 0.046), nearly meets BT. 2020 standards. DCBz-CN device reaches maximum external quantum efficiency (EQE) 4.36%. These offer new design strategy for improving OLEDs.

Language: Английский

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