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    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/5917


    題名: 以嘧啶為主體之二極化發光材料;Pyrimidine-based bipolar light-emitting materials
    作者: 呂俊葟;Chun-Huang Lu
    貢獻者: 化學研究所
    關鍵詞: 有機電激發光二極體;organic light emitting diode
    日期: 2003-06-30
    上傳時間: 2009-09-22 10:10:19 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本實驗主要是以Sonogashira reaction及C-N鍵之偶合反應,引入不同之推拉電子基,合成出一系列以pyrimidine為主體之二極化發光材料。所有化合物並經由氫光譜、值譜儀和元素分析加以鑑定其結構與純度。熱性質方面,由熱重分析儀( TGA )得知其裂解溫度( Td )為306?381℃,由示差掃描熱分析儀( DSC )測得化合物pf1、pf2、pf3、pk1具玻璃轉化溫度( Tg ),範圍介於69?87℃。化合物的光學性質則由紫外光-可見光光譜儀( UV-Vis )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為355?373 nm;最大螢光放射波長為467~522 nm,放光顏色除了化合物pc1為黃綠色之外,其餘皆為藍色,這一系列化合物並具有不錯之量子產率( quantum yield )。經由循環伏安法( CV )量測,可得知HOMO與LUMO之能階,範圍分別介於5.55?5.62 eV與2.58?2.75 eV。本論文並針對不同推拉電子基對於熱性質、吸收波長、放射波長與氧化還原電位之影響作詳盡之探討。 A series of novel bipolar light emitting materials containing pyrimidine core and different donor-acceptor groups were synthesized successfully via Sonogashira reaction and palladium catalyzed C-N coupling reaction. All the compounds were characterized by H1-NMR、Mass and Elemental Analysis. The thermal properties of these materials were investigated by TGA and DSC . The decomposition temperatures ( Td ) of the compounds range from 306 to 381℃. Compound pf1、pf2、pf3 and pk1 are amorphous with glass transition temperature ( Tg ), rangeing from 69 to 87℃. 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 355?373 nm in dichloromathane. The compound pc1 emits greenish-yellow, all others emit in blue region. The maxium fluorescence wavelength lies within 467~522 nm in dichloromethane. Compounds are fluorescent with good quantum yield. HOMO and LUMO energies derived from cyclic voltametry ( CV ) data are in the range of 5.55?5.62 eV and 2.58?2.75 eV, respectively.
    顯示於類別:[化學研究所] 博碩士論文

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