S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
Synthesis and characterization of novel poly(arylenevinylene) derivative
- Song, Se-Yong; Kim, Kang-Su; Lee, Young-Bin; Kwak, Jin-Sung; Kim, Eun-Kyung; Cho, Yong-Kuk; Kwon, Soon-Ki; Zhao, Qinghua; Jung, Won-Ik; Kim, Jang-Joo; Kim, Yun-Hi
- Issue Date
- J Appl Polym Sci 2008, 110, 2009
- The new poly(arylenevinylene) derivative composed naphthalene phenylene vinylene backbone was developed. The theoretical calculation showed that the model compound of the obtained polymer was highly distorted between the stryl and naphthalene units as well as between the backbone and fluorene side units. The polymer was synthesized by the palladium catalyzed Suzuki coupling reaction with 2,6-(1,2-ethylborate)-1,5-dihexyloxynaphtalene and 1,2-bis(4-bromophenyl)-1-(9,9-dihexyl-3-fluorenyl)ethene. The structure of the polymer was confirmed by 1H NMR, IR, and elemental analysis. The weight-average molecular weight of the polymer is 29,800 with the polydispersity index of 1.87. The new polymer showed good thermal stability with high Tg of 195°C. The bright blue fluorescence (max = 475 nm) was observed both in solution and film of new polymer with naphthalene phenylene vinylene backbone. Double layer LED devices with the configuration of ITO/PEDOT/polymer/LiF/Ca/Al showed a turn-on voltage at around 4.5 V, the maximum luminance of 150 cd/m2, and the maximum efficiency of 0.1 cd/A.
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