The synthesis of diblock copolymers via living polymerization and the fabrication of light-emitting devices from fluorescent pendent polymers

• Main Authors: Kuo-Yan Li, 李國彥
• Other Authors: Shu-Mei Chang
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/84497798149862971384

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 91 === Atom transfer radical polymerization (ATRP) is a novel methodology for the polymerization of styrene, methacrylates, acrylate derivatives. In this study, we successfully synthesize a series of diblock copolymers with narrow molecular weight distributions via this method. Applying this method to the application of polymer light-emitting devices, stilbene contained fluorescent pendent polymer (PMMS-Br) with a narrow molecular weight distribution is synthesized. The stilbene contained fluorescent monomer is synthesized from trans-4-stilbenemethanol and methacryloyl chloride by the nucleophilic substitution reaction. Followed polymerization is carried out by the atom transfer radical polymerization methodology. The polymer exhibits blue-purple fluorescence with the PL λmax at 373 nm. Single-layer polymer light emitting devices using PMMS-Br dispersed in polymer matrix are fabricated with the device configuration: ITO/PVK:PMMS-Br/Mg:Ag. PVK is used as polymer matrix to fabricate an effective light-emitting device by doping PMMS-Br. The polymer blended EL device has relatively low driving voltage at 8 Volts. The EL spectrum exhibits the EL λmax at 420 nm.