Toward Rhenium‐based Circularly Polarized OLEDs Using Tailored Chiral Re(CO)3 Emitters

IF 16.1 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Angewandte Chemie International Edition Pub Date : 2024-12-16 DOI:10.1002/anie.202419788

Maria P. Davydova, Ting Xu, Alexander M. Agafontsev, Lingqiang Meng, Mariusz Wolff, Maxim Yu. Petyuk, Irina Yu. Bagryanskaya, Alexey S. Berezin, Alexey V. Tkachev, Hong Meng, Alexander V. Artem'ev

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引用次数: 0

Abstract

Chiral rhenium(I) emitters showing circularly polarized phosphorescence (CPP) are an attractive mainstay for CP organic light‐emitting diodes (CP‐OLEDs). However, the efficiency of such emitters is not ideal, and they have never been explored for circularly polarized electroluminescence (CPEL) applications. Here, we have tailored robust chiral Re(I) complexes with improved CPP properties, and firstly demonstrated CPEL from rhenium emitters. The designed chiral Re(I) complexes exhibit a yellow CPP with enhanced |glum| factors (up to 2.5×10–2) and a good quantum efficiency. The pioneering Re(I)‐based CP‐OLEDs (based on the obtained emitters) exhibit yellow CPEL with |gEL| factors of up to 6.2×10–3 and maximal external quantum efficiency of 13.2%. Furthermore, we have demonstrated for the first time a suppressive effect of a magnetic field on the CPP strength of Re(I) emitters. This work highlights the good potential of chiral Re(I) emitters for CPEL applications, and opens up a new shortcut to CPP‐active Re(I) complexes.

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显示圆偏振磷光（CPP）的手性铼（I）发射器是 CP 有机发光二极管（CP-OLED）中极具吸引力的主流产品。然而，这种发射器的效率并不理想，而且从未在圆偏振电致发光（CPEL）应用中进行过探索。在这里，我们定制了具有更好 CPP 特性的坚固手性 Re(I) 复合物，并首次展示了来自铼发射器的 CPEL。所设计的手性 Re(I) 复合物显示出黄色的 CPP，|glum|因子增强（高达 2.5×10-2），并具有良好的量子效率。基于 Re(I)的CP-OLED（基于获得的发光体）显示出黄色CPEL，|gEL|系数高达6.2×10-3，最大外部量子效率为13.2%。此外，我们还首次证明了磁场对 Re(I) 发射器 CPP 强度的抑制作用。这项工作凸显了手性 Re(I)发光体在 CPEL 应用中的良好潜力，并为获得 CPP 活性 Re(I) 复合物开辟了一条新捷径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Angewandte Chemie International Edition 化学-化学综合

CiteScore

26.60

自引率

6.60%

发文量

3549

审稿时长

1.5 months

期刊介绍： Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.