Novel blue-greenish electroluminescent poly(fluorenevinylene-alt- dibenzothiophenevinylene)s and their model compounds

John A. Mikroyannidis, Helen A. Moshopoulou, John A. Anastasopoulos, Minas M. Stylianakis, Larysa Fenenko, Chihaya Adachi

研究成果: ジャーナルへの寄稿学術誌査読

29 被引用数 (Scopus)

抄録

Poly(9,9-dihexylfluorene-2,7-vinylene-alt-dibenzothiophene-2,8-vinylene) (PS) and poly(9,9-dihexylfluorene-2,7-vinylene-alt-dibenzothiophene-5,5-dioxide- 2,8-vinylene) (PSO) as well as corresponding model compounds were synthesized by Heck coupling. Both the polymers and model compounds were readily soluble in common organic solvents such as tetrahydrofuran, dichloromethane, chloroform, and toluene. The polymers showed a decomposition temperature at ∼430°C and a char yield of about 65% at 800°C in N2. The glass-transition temperatures of the polymers were almost identical (75-77°C) and higher than those of the model compounds (26-45°C). All samples absorbed around 390 nm, and their optical band gaps were 2.69-2.85 eV. They behaved as blue-greenish light emitting materials in both solutions and thin films, with photoluminescence emission maxima at 450-483 nm and photoluminescence quantum yields of 0.52-0.72 in solution. Organic light-emitting diodes with an indium tin oxide/ poly(ethylene dioxythiophene):poly(styrene sulfonic acid)/polymer/Mg:Ag/Ag configuration with polymers PS and PSO as emitting layers showed green electroluminescence with maxima at 530 and 540 nm, respectively.

本文言語英語
ページ(範囲)6790-6800
ページ数11
ジャーナルJournal of Polymer Science, Part A: Polymer Chemistry
44
23
DOI
出版ステータス出版済み - 12月 1 2006

!!!All Science Journal Classification (ASJC) codes

  • ポリマーおよびプラスチック
  • 有機化学
  • 材料化学

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