Macromolecular Research

, Volume 16, Issue 4, pp 337–344 | Cite as

Synthesis and characterization of spirobifluorene-based polymers for organic light-emitting diode applications

  • Md. Anwarul Karim
  • Young-Rae Cho
  • Jin Su Park
  • Kyung-Jin Yoon
  • Seung Joon Lee
  • Sung-Ho Jin
  • Gi-Dong Lee
  • Yeong-Soon Gal
Feature article

Abstract

The following series of blue EL polymers was synthesized using the Suzuki polymerization method: poly(3′,6′-bis(3,7-dimethyloctyloxy)-9,9′-spirobifluorene-2,7-diyl) poly[(OC10)2-spirobifluorene], poly(3′,6′-bis(3,7-dimethyloctyloxy)-9,9′-2,7-diyl-co-4-(3,7-dimethyloctyloxy) phenyl-diphenylamine-4′,4′-diyl} poly[(OC10)2-spirobifluorene-TPA] (5∶1, 9∶1) and poly(3′,6′-bis(3,7-dimethyloctyloxy)-9′,9′-spirobifluorene-2,7-diyl-co-4-(6-((3-methyloxetan-3-yl)methoxy) hexyloxyphenyl-bisphenylamine-4′,4′-diyl) poly[(OC10)2-spirobifluorene-TPA-oxetane]. The weight average molecular weight (Mw) and polydispersity of the resulting polymers ranged from 1.6×104–1.5×105 and 1.77–2.31, respectively. The resulting polymers were completely soluble in common organic solvents and were easily spin-coated onto an indium tin oxide (ITO) substrate. The polymers exhibited strong blue emission peaking at 450 nm. The maximum brightness and luminance efficiency were 9,960 cd/m2 and 1.2 cd/A, respectively.

Keywords

PLED interlayer poly(spirobifluorene) oxetane 

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Copyright information

© The Polymer Society of Korea and Springer 2008

Authors and Affiliations

  • Md. Anwarul Karim
    • 1
  • Young-Rae Cho
    • 1
  • Jin Su Park
    • 2
  • Kyung-Jin Yoon
    • 2
  • Seung Joon Lee
    • 2
  • Sung-Ho Jin
    • 2
  • Gi-Dong Lee
    • 3
  • Yeong-Soon Gal
    • 4
  1. 1.Department of Materials Science and EngineeringPusan National UniversityBusanKorea
  2. 2.Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display MaterialsPusan National UniversityBusanKorea
  3. 3.Department of Electronics EngineeringDong-A UniversityBusanKorea
  4. 4.Polymer Chemistry Lab.Kyungil UniversityHayangKorea

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