A Study on Synthesis and Luminescence Characteristics of Poly(Carbazole Vinylene Phenylene Vinylene)

• Main Authors: JiaXing Lin, 林家興
• Other Authors: WhaTzong Whang
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/44297262075188356771

碩士 === 國立交通大學 === 材料科學與工程系 === 87 === Poly(N-ethylcarbazole vinylene-1,4-phenylene vinylene) (PCVPV-p) and poly(N-ethylcarbazole vinylene-1,3-phenylene vinylene) (PCVPV-m) were synthesized by a Witting reaction from the carbazole and phenylene vinylene monomer. The two copolymers showed good thermal stability and had decomposition temperatures (at 5% weight loss) of 430°C and 460°C, and glass transition temperatures of 244°C and 208°C, respectively. The photoluminescence (PL) spectra showed the two copolymers had emission peaks on 450nm (PCVPV-p) and 435nm (PCVPV-m), therefore PCVPV-m showed a blue-shift comparing to PCVPV-p. The Al / copolymer / ITO devices also showed good diode characteristics in their I-V curves. Besides, the LED devices of the copolymers, doped with some certain percentages of Alq and PBD, showed broad and red-shifted electroluminescence (EL) spectra.