Synthesis and Characteristics of Organic Light-emitting Materials Based on Fluorene and Carbazole

• Main Authors: You-Ming Chen, 陳又銘
• Other Authors: Ken-Tsung Wong
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/31935613703714568134

碩士 === 國立臺灣大學 === 化學研究所 === 93 === Herein, we report a series of novel electrophosphorecent host materials which hybridize the structure characteristics of carbazole and fluorene. Combining the properties such as high ambipolar charge carrier mobility of fluorene, and the low carrier injection barrier of carbazole can be reasonably anticipated to afford novel host materials. Through the deliberate molecular design, we can combine both characteristics of carbazole and fluorene independently. In this section, highly efficient and stable green and red eletrophosphorecent devices have been achieved using the compound DFCO as a host material. In the second section, polyfluorenes were synthesized via palladium- catalyzed Suzuki coupling reaction. The introduction of alkoxyphenyl group on the 9-position of fluorene were not only avoid “keto defect” but also provide the solubility of the polymer. The weight average molar mass of PF1 can reach to 90000 and it could be a potential candidate for a pure blue light emitting polymer in PLED devices. PF2 with UV range emission could be a potential UV light emitter in OLED devices.