有機發光二極體元件中的藍光系統材料扮演非常關鍵的角色，一般被廣泛應用於主發光體材料。本論文以Pyrene(笓)為主體，在其兩側1,6位置上導入不同取代基來合成ㄧ系列包含了藍色主發光體(Host)及藍色客發光體(Dopant)的化合物。

在Pyrene兩側的1,6位置上導入不同Aromatic的分子基團，藉以提高分子體積及分子量、增加分子間的立體障礙、可在蒸鍍元件過程中形成較好的薄膜型態、也增加材料熱穩定性、減少分子間的堆疊進而能減低在高濃度下摻雜分子間的相互作用。

針對這些發光材料作一系列性質研究，包括螢光性質(UV吸收波長,PL放光波長)、熱性質(Tm,Td)、材料HOMO與LUMO值的探討並製成兩種形式的元件進行測試。

元件結構為ITO\CuPc\NPB\Host +Dopant-1或Host+Dopant-2 \BeBq2\LiF\Al。亮度為1000cd/m2所測得結果，在摻雜相同Dopant時B1-3和B1-4發光效率較高，但B1-3較不易發生濃度驟息的現象。在摻雜相同Host時，D1-2-a材料由於接上甲基，其元件發光效率與抗濃度驟息效應，皆較D1-1-a材料來的好。

Blue organic materials play a very important roles in organic light emitting diodes(OLEDs).In general,these materials are widely used as host of emitting layer in OLEDs. We mainly investigate pyrene derivatives in the thesis, different substituents are placed in the position of pyrene1,6 to synthesize a series of blue materials include host and dopant compounds.
Dependent on the method of substituting different aromatic molecular groups in the position of pyrene1,6,the molecular volume and the molecular weight is raised, and the steric hinder between molecules is also increased, so the materials processed by this method can form a good thin film by thermal evaporation, and the thermal stability of these materials is also increased, and due to the reduction of the accumulation between molecule and molecule, it can decrease the reaction between molecule and molecule in the heavily doped situation.
We research a serial characteristics of this emitting materials, including the fluorescence character (UV absorbtion and PL emitting wavelength),thermal property(Tm,Td),and the HOMO and LUMO of material.Finally,we fabricate two types of devices to test our materials.

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