| Summary: | 碩士 === 國立交通大學 === 應用化學系 === 91 === Blue fluorescent dopants based on coumarin structure, in particular, ethyl 9-ethyl- 6,8,8-trimethyl-2-oxo-6,7,8,9-tetrahydro-2H- pyrano[3,2-g] quinoline-3- carboxylat（BC-5）and 9-ethyl-6,8,8-trimethyl-3- (phenylsulfonyl)- 6,7,8,9- tetrahydro- 2H-pyrano[3,2-g] quinolin-2-one（BC-6）have been synthesized and characterized. BC-5 and BC-6 exhibit high quantum efficiency of 1.2 and 0.9 in solution state, respectively, relative to Coumarin 1. They also have high decomposed temperature（Td = 265.7℃ for BC-5 and 348℃ for BC-6）. From the EL performance, at optimal doping concentration of 1.6%, BC-5 and BC-6 exhibit more saturated blue color in terms of CIEx, y（0.15，0.22） and CIEx, y（0.15，0.26）.
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