Syntheses and characterization of functionalized polynorbornene dicarboximides for flexible substrates |
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Authors: | Shinkyu Park Myeon‐Cheon Choi Hun Jeong Cho Won‐Jeong Shin Won Bong Jang Gee Sung Chae Chang‐Sik Ha |
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Affiliation: | 1. Department of Polymer Science and Engineering, Pusan National University, , Busan, 609‐735 Korea;2. LG Display Co., Ltd., , Gyeonggi‐do, 413‐811 Korea |
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Abstract: | In this study, we synthesized polynorbornene (PNB) dicarboximides substituted by monochlorophenyl group (PMCPhNDI) and dichlorophenyl group (PDCPhNDI) via ring‐opening polymerization using a ruthenium catalyst and investigated their thermal, mechanical, and optical properties. We also discussed the performance and application of the functionalized PNB dicarboximide films as flexible substrates for organic light‐emitting devices (OLEDs). The polymer films exhibited good optical transparency with an average transmittance of around 97% in the visible light region and good thermal stability with a 5% degradation temperature of >440°C. The polymers were applied for flexible displays, which were coated on indium tin oxide (ITO) thin films using a radio‐frequency planar magnetron sputtering system with changing the deposition substrate temperatures. A flexible OLED that was fabricated on the ITO‐grown polymer substrates exhibited a performance as comparable to the corresponding ITO‐grown glass substrates. Copyright © 2012 John Wiley & Sons, Ltd. |
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Keywords: | polynorbonene dicarboximides ring‐opening polymerization flexible display organic light‐emitting device thermal stability transparency |
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