新型含三氮雜三茚并苯與吡咯材料的設計、合成、鑑定及其在有機發光二極體上之應用

Design, Synthesis, Characterization and Application of Novel Triazatruxene- and Pyrrole-Based Materials for Organic Light Emitting Diodes

胡元正(Yuan-Cheng Hu)

指導教授 ： 汪根欉

國立臺灣大學/理學院/化學研究所/博士(2021年)

https://doi.org/10.6342/NTU202104464

摘要

有機發光二極體(OLED)具有廣視角、短反應時間、高亮度與對比度、無需背光源與可應用至可撓性基板等優點，因此吸引業界與學界致力研究開發高效率之OLED元件。既有研究已證實將激發錯合體(exciplex)應用至OLED的發光層時，可有效利用OLED元件中的激子(exciton)，並同時具有製程簡化與可調控發光光色等優點，因此開發可應用至exciplex OLED的新型材料具備其學術與應用上的價值。
本論文的第一章首先會介紹OLED的工作原理與近年發展。第二章將會開發一系列由三氮雜三茚并苯(triazatruxene)為中心結構的新型分子，並分別探討其應用至exciplex OLED中發光層與電洞傳輸層的結果。第三章將介紹一系列由吡咯(pyrrole)為中心結構的新型分子，並進一步討論與一系列具較低之最低未佔用分子軌域能階(LUMO)之受體(acceptor)分子形成長波長exciplex放光的結果。

關鍵字

有機發光二極體 ； 激發錯合體 ； 三氮雜三茚并苯 ； 吡咯

並列摘要

Organic light-emitting diodes (OLEDs) have advantages including wide viewing angles, fast response time, high brightness and contrast, no need of backlight, and compatibility on flexible substrates, hence appeal worldwide investigation from both industry and academia toward high-performance OLEDs. Adopting exciplex as the material in the emitting layer has been proven by previous researches to efficiently utilize exciton in OLED devices, along with its other advantages, such as simplified fabrication process and tunable emission color. Therefore, developing novel materials for high performance exciplex-based OLEDs has its academic and pratical value.
In this thesis, the working principle and current development of OLEDs will be briefly introduced in Chapter 1. Chapter 2 summarized the investigation of triazatuxene-based molecules upon various N-substituents in application of exciplex-based doped- and non-doped devices, as well as its systematic evaluation as hole-transporting materials in solution process upon changing various bridging atoms between central core and end-capped styrene moieties. In Chapter 3, a series of novel pyrrole-based molecules with wide bandgap were designed and synthesized. Their application on long wavelength exciplex illumination upon pairing with a series of acceptor molecules possessing low-lying lowest unoccupied molecular orbital (LUMO) energy levels will be discussed.

並列關鍵字

OLED ； exciplex ； triazatruxene ； pyrrole

參考文獻

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