Optimization of polymeric host composition for polymer-based electrophosphorescent devices

A new aromatic host polymer poly{[1,4-bis(9-decyl carbazole-3-yl)-2,3,5,6-tetrafluorobenzene-3,3 0 -diyl]-alt-[N-methy lisatin-2-one-3,3-diyl]} (PICzFB) containing carbazole-tetrafluori nebeneze-carbazole moiety in the p-conjugated interrupted polymer backbone was synthesized by superacid-catalyzed metal-free polyhydroxyalkylation. The resulted copolymer PICzFB showed a comparatively wide band gap up to 3.32 eV and high triplet energy (E T ) of 2.73 eV due to confined conjugation by the dAC bond interrupted polymer backbone. Blue and green light-emitting devices with PICzFB as host, FIrpic and Ir(mppy) 3 as phosphorescent dopants showed the maximum luminous efficiencies of 5.0 and 27.6 cd/A, respectively. The results suggested that the strategy of incorporating bipolar unit into the p-conjugated interrupted polymer backbone can be a promising approach to obtain host polymer with high triplet level for solution-processed blue and green phosphorescent polymer light-emitting diodes.

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Efficient π-conjugated interrupted host polymer by metal-free polymerization for blue/green phosphorescent light-emitting diodes

Chen

Biao-lan

et al. 2014

J. Polym. Sci. Part A: Polym. Chem.

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Efficient and low potential operative host/guest concentration graded bilayer polymer electrophosphorescence devices

Kim

Lee

Wang

et al. 2012

Journal of Luminescence

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Efficient green OLED devices with an emissive layer comprised of phosphor-doped carbazole/bis-oxadiazole side-chain polymer blends

Kim

Zhang

Zúñiga

et al. 2011

Organic Electronics

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Optimization of polymeric host composition for polymer-based electrophosphorescent devices

Cited by 4 publications

References 22 publications

Efficient π-conjugated interrupted host polymer by metal-free polymerization for blue/green phosphorescent light-emitting diodes

Efficient π-conjugated interrupted host polymer by metal-free polymerization for blue/green phosphorescent light-emitting diodes

Efficient and low potential operative host/guest concentration graded bilayer polymer electrophosphorescence devices

Efficient green OLED devices with an emissive layer comprised of phosphor-doped carbazole/bis-oxadiazole side-chain polymer blends

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