Synthesis of new blue anthracene-based conjugated polymers and their applications in polymer light-emitting diodes

Hung Min Shih*, Cheng Jui Lin, Shin Rong Tseng, Chih Hung Lin, Chain-Shu Hsu

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

A series of anthracene-based conjugated copolymers containing 9,10-bis(6-bromonaphthalen- 2-yl)-2-tert-butylanthracene (BNA) and 2,7-diphenyl substituted fluorene (DPPF) moieties are prepared via a palladium-catalyzed Suzuki polymerization. All of the synthesized polymers emit blue light at around 450nm and show good thermal and color stability. Their electroluminescence spectra remain unchanged at high driving voltage. The double-layer polymer light-emitting diode (PLED) fabricated with ITO/PEDOT:PSS/DPPFBNA3/CsF/Al, produces a maximum brightness of 1 650 cd · m-2 and has a luminance efficiency of 0.39 cd ·A-1. The ITO/PEDOT:PSS/ TFB/DPPFBNA3/CsF/Al multilayer PLED, incorporating a TFB layer to facilitate hole transportation, produces a maximum brightness of 5 371 cd · m -2 and a luminance efficiency of 1.18 cd · A-1.

Original languageEnglish
Pages (from-to)1100-1108
Number of pages9
JournalMacromolecular Chemistry and Physics
Volume212
Issue number11
DOIs
StatePublished - 1 Jun 2011

Keywords

  • anthracene
  • blue polymer light-emitting diodes
  • buffer layer
  • conjugated polymers
  • films
  • fluorene

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