Di-aryl substituted poly(cyclopenta[def]phenanthrene) derivatives containing carbazole and triphenylamine units in the main chain for organic light-emitting diodes

Jinwoo Kim, Sun Hee Kim, Jaehong Kim, Il Kim, Youngeup Jin, Joo Hyun Kim, Han Young Woo, Kwanghee Lee, Hongsuk Suh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The syntheses and characterization of poly(2,6-(4,4-bis(4-((2-ethylhexyl) oxy)phenyl)-4H-cyclopenta[def] phenanthrene)-alt-triphenylamine-4,4′-diyl) (TPA-PCPP), poly(2,6-(4,4-bis(4-((2-ethylhexyl)oxy)phenyl)-4H-cyclopenta [def]phenanthrene)-alt-3,6-(9-(2-ethylhexyl)carbazole)) (3,6-Cz-PCPP), poly(2,6-(4,4-bis(4-((2-ethylhexyl)oxy)-phenyl)-4H-cyclopenta[def]phenanthrene) -alt-2,7-(9-(2-ethylhexyl)carbazole)) (2,7-Cz-PCPP), and poly(2,6-(4,4-bis(4- ((2-ethylhexyl)oxy)phenyl)-4H-cyclopenta[def]phenanthrene)-co-2, 7-(9-(2-ethylhexyl)carbazole)) (2,7-Cz-co-PCPP) are presented. The carbazole and TPA moieties, which can influence the highest occupied molecular orbital (HOMO) energy level, were introduced to the di-aryl substituted PCPP backbone. The PL spectra of the polymer films showed maximum peaks at approximately 417-429 nm. The devices of the 2,7-Cz-co-PCPPs with the configurations of ITO/PEDOT:PSS/polymers/Ca/Al generated EL emissions with maximum peaks at approximately 460 nm, CIE coordinates of (x =0.16, y=0.033-0.038), turn-on voltages of 4-5 V, maximum brightness of 309-337 cd/m2, and luminescence efficiencies of 0.06-0.09 cd/A. The synthesized polymers may be useful for PLED device applications. [InlineMediaObject not available: see fulltext.]

Original languageEnglish
Pages (from-to)589-598
Number of pages10
JournalMacromolecular Research
Volume19
Issue number6
DOIs
Publication statusPublished - 2011 Jun

Keywords

  • carbazole
  • electroluminescence
  • photoluminescence
  • polymer
  • triphenylamine

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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