本論文分為兩個主題，第一個主題在針對[1,3,5]Triazine 為中心的化合物TAATZ (2,4,6-triarylamino-1,3,5-triazine)性質開始研究，利用光譜化學和電化學，討論氧化、還原過程及HOMO、LUMO能階，並且實際應用於有機發光二極體中，討論在電洞傳輸層的表現。三氮井材料因缺乏p電子，因此當二苯胺取代基可以提供p電子時，氧化過程可逆性較佳。而甲氧基有利於分子形成非結晶狀態，有效提高材料的成膜性質。
　　第二個主題在討論在不同位置的三氟甲基取代，對銥錯化合物的發光性質探討。錯化合物在紫外光範圍，有來自取代基的吸收峰，而在可見光範圍則有金屬中心的MLCT 吸收。在(napy)2Ir(acac)加上三氟甲基取代時，可使放射波長紅移20 nm 以上，(4-fnapy)2Ir(acac)和(5-fnapy)2Ir(acac)放光波長分別為617與613 nm，由光譜化學和電化學資料可知，三氟甲基取代時可大幅降低LUMO 能階，造成放光性質紅移的現象。

　　A series of new TAATZ compounds (2,4,6-triarylamino-1,3,5-triazine derivatives were synthesized and their physical and chemical properties were measured. The HOMO energy levels of TAATZ 1-4 were about -5.4 eV and the LUMO levels were from -1.7 eV to -1.9 eV. Unstable radical cation of TAATZ-4 was showed because of its lack of electron donor group. The methoxy group reduces the formation of crystallization. It is help for forming a uniform amorphous thin film by a conventional vacuum deposition.
　　New red-emitting iridium complexes of the 2-Naphthalen-1-yl-trifluoromethyl-pyridine (fnapy) ligand with trifluoromethyl group at different positions were synthesized and characterized and the photophysical and electrochemical properties
were investigated. These iridium complexes exhibit intense absorption bands in the UV region due to p-p* transition and weaker metal-to-ligand charge transfer (MLCT) transitions that extend into the visible region. Upon excited at 470 nm, (4-fnapy)2Ir(acac) and (5-fnapy)2Ir(acac) emit red photoluminescence at 617and 613 nm, respectively. Compared to Ir(napy)2(acac), the introduction of trifluoromethyl-substituted ligands resulted in remarkable bathochromic effect. The trifluoromethyl group has a stronger influence on lowering the LUMO levels.

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