香豆素衍生物之合成以及發光性質探討

Synthesis of Coumarin Derivatives and Discussions of Their Fluorescent Properties

李賢斌(Xhian-Bin Li)

指導教授 ： 趙豫州

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2005年)

摘要

有機發光二極體(OLED)具備自發光、廣視角、高對比、高亮度、解析度佳、快速應答、低操作電壓、低耗電、面板厚度薄等諸多優點，尤其是在低耗能的優點更是其他顯示器望塵莫及的。但OLED仍有許多技術瓶頸急待克服，尤其是優異的純紅光電激發光材料尚未研發成功，造成全彩化時發生色域不足的問題。香豆素衍生物具備合成容易、螢光性強、熱穩定性高等優點，雖曾應用於OLED，唯發光範圍多為藍、綠光(390 ~ 480 nm)。本論文以香豆素為主體結構，改變特定位置的官能基，合成出染料Ⅰ、Ⅱ、Ⅲ等三系列染料並量測其光學性質。染料ⅠC、ⅡC、ⅢC之螢光放光波長已達到正紅光，以染料ⅠC、ⅡC、ⅢC當作發光層材料製作元件時，部分可成功運作並發出正紅光，雖然壽命短且亮度不高，如加強最佳製程參數之探討以及改善元件製作之環境，應可有效解決此一缺失。有關染料結構式與螢光波長、量子效率之關係，亦進行深入探討並獲致結論，可供爾後開發香豆素發光材料或製備發光元件參考。

關鍵字

有機發光二極體 ； 香豆素 ； 紅色螢光

並列摘要

In general, derivatives of coumarin have superior fluorescent properties and good quantum yield, thus they were be taken as luminescent materials on luminescent layer in organic light emitting diodes which emit blue and green light.
Three series of coumarin dyes were synthesized from raw materials. Among them, dyes of series Ⅱ are new compounds. The relationship between their optical properties with the structure of dyes were discussed. The fluorescence wavelengths of Dye ⅠC、ⅡC and ⅢC are in neutral red light range.
PLED and OLED devices were prepared by DyeⅠC, ⅡC and ⅢC. They emit neutral red light at 27 volt

並列關鍵字

organic light emitting diode ； coumarin ； red fluorescence

參考文獻

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