本論文主要合成一系列三氮雜苯衍生物,在2,4,6-三苯基-1,3,5-三氮雜苯之苯環鄰位引入不同立障基團,期望能得到截斷共軛之剪刀狀結構。由X射線單晶繞射圖可知此一系列分子的非共平面性良好導致分子間不易堆疊,且分子中具有多苯環剛硬結構,由熱性質分析發現其具有良好熱穩定性;經由光學性質分析,其特殊分子結構會影響其光物理性質;另外,電化學分析方面,循環伏安法的還原訊號也有特殊表現;在元件方面,我們將化合物3-6應用在藍色磷光有機電激發光二極體 (organic light emittng diode,OLED)元件中的主發光體材料,摻混藍光客發光體材料-雙(4,6-二氟苯基吡啶-N,C2)吡啶甲基合銥 ( FIrpic ),其元件結構為ITO/NPB/mCP/compound 3-6:9%FIrpic/TAZ/LiF/Al其中以化合物4作為主發光體材料的元件效率最好,當摻混12 % FIrpic其驅動電壓為7.4 V,最大發光效率可達26.39 cd/A,最大亮度可達6190 cd/m2。
In this thesis, 2,4,6-triphenyl-1,3,5-triazine derivatives were successfully prepared. These compounds possess scissor-like conformations which were evidenced by using the spectroscopic and electrochemical methods, as well as by X-ray crystallography. The non-coplanar structure would also reduce the intermolecular stacking, prohibiting the compounds from crystallization and therefore increasing the thermal stability of their amorphous film structure Organic light emitting diodes (OLED) with compound 3-6 as the host matrix for FIrpic were successfully prepared. Under the best conditions, the OLED exhibited turn on voltage of 7.4 V luminance efficiency of 26.39 cd/A with the maximum brightness of 6190 cd/m2.