有機光電材料具有高的螢光效率和半導體性質，在發光二極體(EL)是未來展示器的發展重點，藉由有機分子結構的設計可以得到特定放光波長。本研究主要是以鈴木偶合反應(Suzuki coupling reaction)，合成出一系列以芘(pyrene)為主體之發光材料。藉由合成形成支鏈，可以避免激發複合體(aggregates/excimers)所造成低量子效率長波長放射光的情形，形成應用性高的發藍光材料。此外化合物經由氫光譜及質譜儀加以鑑定其結構，熱性質方面，由熱重分析儀得知1.1-bipyrene、1,4-di(pyren-1-yl)benzene、2,7-di(pyren-1-yl)-9H-fluorene的熱烈解溫度T5d分別為382、437及202℃，由熱差掃描熱分析儀測得化合物並無觀察到玻璃轉化溫度(Tg)，顯示其具有極高之熱穩定性，化合物的光學性質則由紫外光-可見光光譜儀和螢光光譜儀測得，化合物在二氯甲烷溶劑中所得之最大吸收波長範圍分別為349、351及348 nm；最大螢光放射波長分別為437.6、432.6及418 nm，放光顏色皆為藍色範圍，在固態薄膜最大螢光放射波長分別為479.6、457.6及455.6 nm，放光顏色分別為藍綠光、藍光及藍光範圍，而經由循環伏安法量測，可得知HOMO與LUMO範圍分別介於-5.70~-5.76 eV與-2.78~-2.83 eV，此外化合物並具有不錯的量子產率。

Organic materials have been expected to be applicable for practical electro-luminescent (EL) devices because of their high florescence efficiency and semiconducting properties. Through molecular design of organic materials, we can get a selection of emission colors. In this study, a series of novel bipolar light emitting materials containing pyrene were synthesized successfully via Suzuki coupling reaction. The use of pyrene molecule is limited because they formed π-aggregates/excimers which lead long wave excimer emission with low quantum efficiency. By introducting long or branched side chains, pyrene derivatives were useful for the blue emmiting material wuth high quantum efficiency. All the compounds were characterized by H1-NMR and Mass. The thermal properties of these materials were investigated by TGA and DSC. The decomposition temperatures (Td) of DP, DPB and DPF range are 382, 437 and 202℃and do not observe glass transition temperature (Tg). The optical properties of these materials were studied by UV/Vis and PL spectroscopic methods. All of these compounds exhibit the maxaimum absorption in the range of 348~351 nm in dichloromethane. The maxium fluorescence wavelength lies within 455~480 nm in solid film. Compounds emit in blue region. Compounds are fluorescent with good quantum yield. HOMO and LUMO energies derived from cyclic voltametry data are in the range of -5.70~-5.76 eV and -2.78~-2.83 eV, respectively.

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