Spiro Compounds for Organic Light-Emitting Diodes,Accounts of Materials Research

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Spiro Compounds for Organic Light-Emitting Diodes
Accounts of Materials Research ( IF 14.0 ) Pub Date : 2021-11-19 , DOI: 10.1021/accountsmr.1c00208
Yang-Kun Qu ₁ , Qi Zheng ₁ , Jian Fan ₁ , Liang-Sheng Liao _{1,

2} , Zuo-Quan Jiang ₁

Affiliation

The development of cutting-edge optoelectronic devices is rapidly changing science and technology. The organic light-emitting diodes (OLEDs), as one of the most applicable techniques of organic electronics, are experiencing the process of materials’ upgrade. Among all the organic units to construct OLED materials, the spiro structure and its derived compounds have been widely studied due to the good thermal stability and unique orthogonally rigid structure. It had shown great potential in first generation fluorescent OLEDs (FOLEDs) and second generation phosphorescent OLEDs (PhOLEDs). Recently, it has achieved outstanding performance in third generation thermally activated delayed fluorescence (TADF) OLEDs, which is attributed to its orthogonal structure caused by the spiro atom; thus the spiro compound can innately separate the hole and electron which is beneficial for minimizing the singlet–triplet splitting energy (ΔE_ST). The most classic aromatic spiro unit is 9,9′-spriobifluorene (SBF), which was first reported in 1930. The study of aromatic spiro compounds is closely related to the development of organic semiconductors; now, the structure–property relationship of spiro compounds is getting clearer and attracting wide attention from the material community.

中文翻译：

用于有机发光二极管的螺环化合物

尖端光电器件的发展正在迅速改变科学技术。有机发光二极管（OLED）作为有机电子最适用的技术之一，正在经历材料升级的过程。在构成OLED材料的所有有机单元中，螺结构及其衍生化合物由于其良好的热稳定性和独特的正交刚性结构而被广泛研究。它在第一代荧光 OLED (FOLED) 和第二代磷光 OLED (PhOLED) 中显示出巨大潜力。最近，它在第三代热激活延迟荧光 (TADF) OLED 中取得了优异的性能，这归因于其由螺原子引起的正交结构；Ë _ST）。最经典的芳香螺单元是1930年首次报道的9,9′-螺二芴（SBF）。芳香螺化合物的研究与有机半导体的发展密切相关；现在，螺环化合物的构性关系越来越清晰，受到了材料界的广泛关注。

更新日期：2021-12-24

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