Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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New Conjugated Polymer Based on Dihydroindoloindole for LEDs

  • Jin, Yeong-Eup (Department of Chemistry and Center for Plastic Information System, Pusan National University) ;
  • Kim, Kwang-hyun (Department of Chemistry and Center for Plastic Information System, Pusan National University) ;
  • Song, Su-hee (Department of Chemistry and Center for Plastic Information System, Pusan National University) ;
  • Kim, Jin-woo (Department of Chemistry and Center for Plastic Information System, Pusan National University) ;
  • Kim, Jae-hong (Department of Chemistry and Center for Plastic Information System, Pusan National University) ;
  • Park, Sung-Heum (Department of Physics, Pusan National University) ;
  • Lee, Kwang-hee (Department of Physics, Pusan National University) ;
  • Suh, Hong-suk (Department of Chemistry and Center for Plastic Information System, Pusan National University)
  • Published : 2006.01.20
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Abstract

New electroluminescence polymer, poly(5,10-dihexyl-5,10-dihydroindolo[3,2-b]indole-2,7-diyl) (PININO) was synthesized by Yamamoto conditions with Ni(0) catalyst. The full characterization of structures and properties as well as the performances of the electroluminescence devices of the new polymer are presented. The resulting polymer, which exhibits good solubility in common organic solvents, was used as the electroluminescence layer for the light-emitting diodes (LEDs) (ITO/PEDOT/polymer/Al). PININO shows turn-on voltage of 2.5 V, and electroluminescence (EL) with maximum peak at 490 nm, maximum brightness of 40 cd/$m^{2}$ at 8 V, and efficiency of 0.002 cd/A at 350 mA/$cm^{2}$.

Keywords

References

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