三蝶烯基电致发光材料
Triptycene Based Electroluminescent Materials
有机电致发光二极管具有自发光、效率高、结构轻薄,能实现透明、柔性等多样化设计等优点,在显示和照明等领域具有广阔的应用前景。三蝶烯是由三个苯环通过饱和碳连接而成的稳定、三维、刚性结构,且三个苯环间的共轭非常小,三个苯环上取代基不同还能实现非常稳定的手性,能为高性能发光材料的设计提供理想的刚性三维骨架,以提升发光材料的稳定性、调控发光材料分子间相互作用力(降低浓度淬灭同时提高成膜性)和稳定的手性环境。本文综述了将三蝶烯基团融入到电致发光电子传输层及发光层材料分子中的研究进展,并对三蝶烯基电致发光材料的未来进行了展望。通过分析和总结三蝶烯基团对材料性能的影响,明确其优势,以期抛砖引玉,使更多科研工作者将三蝶烯的优势在未来的新材料领域继续发扬光大。
Organic light-emitting diodes (OLEDs) have the advantages of self-luminous, high efficiency, light and thin structure, and can achieve diverse designs such as transparency and flexibility. They have broad application prospects in fields such as display and lighting. Triptycene is a stable, three-dimensional, and rigid structure formed by connecting three benzene rings through saturated carbon, and the conjugation between the three benzene rings is very small. Different substituents on the three benzene rings can also achieve very stable chirality. The triptycene group can provide an ideal rigid three-dimensional framework for the design of high-performance luminescent materials, in order to enhance the stability of luminescent materials, regulate intermolecular interactions (reduce concentration quenching while improving film formation), and maintain a stable chiral environment. In this paper, the research progress of incorporating triptycene group into electroluminescent electron transport layer and light-emitting layer material molecules is reviewed. The future of triptycene based electroluminescent materials is also prospected. By analyzing and summarizing the influence of triptycene group on material properties, its advantages are identified, so as to play a role in attracting more researchers to carry forward the advantages of triptycene in the field of new materials in the future.
1 Introduction
2 The host materials and electron transport materials with triptycene group
3 Fluorescent materials with triptycene group
4 TADF materials with triptycene group
5 Iridium complex phosphorescent materials with triptycene group
三蝶烯 / 热活化延迟荧光 / 圆偏振光 / 磷光材料 / 有机发光二极管
triptycene / thermally activated delayed fluorescence / circularly polarized light / phosphorescent material / organic light-emitting diode
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国家自然科学基金项目(21572001)
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