Synthesis and electroluminescent properties of disubstituted polyacetylene derivatives containing multi-fluorophenyl and cyclohexylphenyl side groups

Sheng-Hsiung Yang, Chun Hao Huang, Chiu Hsiang Chen, Chain-Shu Hsu*

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

A new series of disubstituted polyacetylene derivatives that contain multi-fluorine atoms on the pendent phenyl ring have been synthesized and characterized. The results reveal a greater red-shift in UV-vis absorption and PL emission upon incorporating more fluorine atoms on the pendent phenyl ring. Among them, disubstituted polyacetylene with a difluorophenyl group (PDPA-2F) showed the highest luminescent efficiency. The device performance can be promoted by blending a holetransporting material TM-TPD into PDPA-2F as the active layer or by using a light-emitting copolymer in which PDPA-2F was copolymerized with a carbazole group (PDPA-2Fcab). A lightemitting diode of ITO/PEDOT/PDPA-2Fcab/Ca/Al revealed a maximum luminescence of 4230 cd · m-2 at 14 V and a maximum current efficiency of 3.37 cd · A-1 at 7 V.

Original languageEnglish
Pages (from-to)37-47
Number of pages11
JournalMacromolecular Chemistry and Physics
Volume210
Issue number1
DOIs
StatePublished - 2 Jan 2009

Keywords

  • Conjugated polymers
  • Light-emitting diodes
  • Metathesis
  • Polyacetylenes

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