有機光電材料由於具有高的螢光效率與半導體性質，使得其在發光二極體(EL)元件上的運用上備受矚目。在EL顯示技術上，我們可藉由有機分子結構的設計，進而可在多彩的範圍內得到特定波長的放光效果，而其中在藍光放射範圍內更顯重要性。在本論文中，我們合成出一系列新的藍光光電分子。
　　1,3,4-oxadiazole結構已被報導具有好的電子傳輸能力，而pyrazole官能基亦具備多電子雜環特性，本論文將兩者融入到同一分子結構內並探討其光電效果。在分子合成路徑中，我們將pyrazole帶入分子共軛主鏈系統內，且在分子旁鏈上結合2～3個1,3,4-oxadiazole官能基，藉由兩者的結合達到更佳的分子光電特性。
　　我們將合成出的新材料分子透過UV-Vis、PL、CV及DSC的測試來探討分子的光電性質與熱穩定性。在最終的EL元件的組成上，我們在真空下使用熱蒸鍍技術，將合成出的材料分子與金屬電極吸附在ITO玻璃基材上進而完成一雙層的元件，藉由元件的I-V曲線圖與EL圖譜可證明出我們成功的開發出一系列新的藍光光電材料。

　　Organic materials have been expected to be applicable for practical electroluminescent (EL) devices because of their high florescence efficiency and semiconducting properties. One of the most fascinating advantage of organic materials is the possibility of a wide selection of emission colors, particularly in the blue region, in EL displays through molecular design of organic materials. In this study, we explored a series of new blue emission materials.
　　Compounds derived from 1,3,4-oxadiazoles had been reported having good electron-transporting properties and the pyrazole moietie is an electron-rich heterocycle. We established to introduce pyrazole units into the main chain conjugate with two or three 1,3,4-oxadiazole moieties to improve the electroluminiecent properties of 1,3,4-oxadiazole-based pyrazole derivatives by using convenient synthesis strategy.
　　The electroluminiecent properties and thermal stability for the obtained products were studied by analyzing UV-VIS, PL,CV,and DSC spectra. And finally, a double-layer OLED devices were constructed by vapor deposition of the materials under vacuum onto the ITO-coated glass substrate.The I-V curves and EL spectra had proven that our new synthetic compounds were new efficient blue electroluminescent materials.

1. 陳文章；光訊，第66期，P.16，民86年6月
2. M. Pope , H. P. Kallman and P. Mangnante, J. Chem. Phys. 1963, 38, 2042.
3. C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett. 1987, 51, 913.
4. 莊坤儒；工業材料147期，P.138，民88年3月
5. K. –W. Klupfel, O. Sus, H. Behmenburg and W. Neugebauer, Us 3, 1965, 180, 730.
6. T. B. Brantly, L. E. Contois and C. J. Fox, Us 3, 1971, 567, 450.
7. T. B. Brantly, L. E. Contois and C. J. Fox, Us 3, 1972, 658, 520.
8. Y. Hamada, C. Adachi, T.Tsutsui and S. Sanito, Jpn. J. Appl. Phys. 1992, 31, 1812.
9. J. Kido, Jpn. J. Appl. Phys. 1993, part2, 32(7A); L917.
10. C. Hosokawa, Us 5, 1992, 142, 343.
11. T. Shibata, Jp 6,122,874 , 1994.
12. T. S. Haque, S. Tadesse, J. Marcinkeviciene, J. Med. Chem. 2002, 45, 4669
13.C. Adachi, T. Tsutsui and S. Saito, Appl. Phys. Lett. 1989,
55, 1489.
14. Y. Hamada, C. Adachi, T. Tsusui and S. Saito, Jpn. J.
Appl.Phys. 1991, 1540.
15. Y. Hamada, C. Adachi, T. Tsusui and S. Saito, Jpn. J.Appl.
Phys. 1992, 31, 1812.
16. D. O’Bradley and T. Tsutsui, J. Appl. Phys. 1997, 82, 2662.
17. K. Kawate, K. –I. Ohkura, M. Yamazaki, M. Kuroda and O.
Nabeta, Proc.SPIE Int. Soc. Opt. Eng. 1994, 2174, 200.
18. P.S.N.Reddy,P.P.Reddy,Indian J.Chem.Sect B ,1987,26B ,890
19. H. Ueda, T. Kitahora, K. Furukawa and Y. Terasaka, Synth. Met. 1997, 91,257.
20. J. Bettenhausen, P. Strohriegl, W. Brutting, H. Tokuhisa and T. Tsutsui,J. Appl. Phys. 1997, 82, 4957.
21. Y. Shirota, Y. Kuwabara, D. Okuda, R. Okuda, H. Ogawa, H.
Inada, T. Wakimoto, H. Nakada, Y. Yonemoto, S. Kawami and
K. Imai, J. Luminesc. 1997, 72, 985.
22. S. Tokito, H. Tanaka, K. Noda, A. Okada and Y. Taga, Macromol. Symp. 1997,125, 181.
23.F. Dumitrascu, C. I. Mitan, D. Dumitrescu, Arkivoc. 2002, 2, 80.
24.張志仲 國立成功大學化學研究所碩士論文1997.
25. Thelakkat, M.; Schmidt, H.W. Adv. Mater. 1998, 10, 219.
26.Y. Q. Lin, H. Ma, S. Liu, 1998, 39, 1089
27.J. L. Bredas, R. Silbey, D. S. Boudreaux, 1983, 105, 6555