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通过调节的p/n/σ-π混合结合的碳基功能化阿扎素基多重共振发射器

Chao Li¹, Lingqiang Meng², Huanchao Gu¹

¹School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China.

Angewandte Chemie (International ed. in English)

|January 25, 2026

概括

研究人员开发了用于先进有机电子的新型混合碳-氧-- (COPN) 多重共振 (MR) 发射器. 这些新材料具有增强的热激活延迟光 (TADF) 特性,为更高效的有机发光二极管 (OLED) 铺平了道路.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
光电学是指光电子产品.

背景情况:

有机π结合分子 (OCM) 对于光电子应用至关重要.
在OCM中调整电子合器允许对属性进行微调.
现有的带有 p-π 结合的 BN/CON 发射器具有局限性.

研究的目的:

报告混合COPN多重共振 (MR) 热激活延迟光 (TADF) 发射器的第一个例子.
研究P中心超对TADF属性的影响.
探索这些发射器在有机发光二极管 (OLED) 中的潜力.

主要方法:

模块化合成协议用于创建混合COPN MR-TADF发射器.
电子合的分析,包括n/σ/σ*-π*超和电荷转移 (CT) 特性 (SR和LR).
使用开发的发射器制造和测试OLED设备.

主要成果:

新的COPN MR发射器显示可调节的TADF属性 (FWHM,ISC/RISC,PLQY) 受P调节的超的影响.
PO-导数显示了CON型MR结构与短距离NCO CT.
) - 衍生品表现出COP类型的MR结构,具有远程PCO CT.
双PO衍生显示PON型MR-TADF与NPO CT,实现高PLQY (54%) 和狭窄的FWHM (13纳米).
OLED 设备显示了窄带蓝色 (FWHM: 26 nm) 和色 (FWHM: 17 nm) 辐射,具有高的 EQE (7.3%和22.8%).

结论:

混合COPN MR-TADF发射器为设计先进光电子材料提供了一个新的平台.
将 p/n/σ-π 合纳入 OCM 中显著增强了 TADF 特性.
这些发现对开发下一代有机电子设备具有卓越的性能具有很大的前景.

关键词:

(超) 连接的连接法.多重共振是一种多重共振.有机的有机化合物热激活的延迟光效应 π-结合的异环环.

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