| Summary: | 碩士 === 國立臺灣師範大學 === 化學系 === 102 === Four phenyl benzofuran derivatives incorporating naphthylene, electron excessive phenothiazine or electron deficient dimesityl boron entities have been developed successfully. In addition to wide energy gap (HOMO/LUMO) and ambipolar characters, the compounds are also emissive in the visible or even blue and violet region.
In order to evaluate the potential of the materials in OLED, their photophysical and work function were investigated by UV-Vis absorption and fluorescence spectrum, and photoelectrical spectrum. Inaddition, TGA, DSC and TOF were used for probing the thermo-stability and carrier mobility of the new materials.
The HOMO/LUMO energy gap of the compounds ranges from 3.28 to 3.73 eV. These materials also possess excellent carrier mobility of ~10-4 cm2/Vs. Compounds C-naOL and C-MesOL have better quantum yields than the other two and may have good potential as violet- and blue-emitters for OLEDs.
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