Light emission of a single strand of poly(3,4-ethylenedioxythiophene) (PEDOT) nanowire

Dong Hyuk Park, Hyun Seung Kim, Yong Baek Lee, Jung Min Ko, Jun Young Lee, Hyun Jun Kim, Dae Chul Kim, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We observed the green and orange-red light emission from the single strand of doped and de-doped poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires, respectively, by means of the laser confocal microscope photoluminescence (PL) experiments. Light-emitting PEDOT nanowires were electrochemically synthesized and the doping level of the systems was electrochemically controlled through cyclic voltammetry in a solution of 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) ionic liquid. From the ultraviolet and visible absorbance spectra, we observed the bipolaron band and the π-π* transition peaks for the doped and de-doped PEDOT nanowires, respectively. The PL intensity of the de-doped PEDOT single nanowire was 2-3 times higher than that of the doped one. Comparing the PL intensities of the fresh and aged PEDOT single nanowire, we observed the relatively long-term stable light emission from the PEDOT nanowires.

Original languageEnglish
Pages (from-to)90-94
Number of pages5
JournalSynthetic Metals
Issue number3-4
Publication statusPublished - 2008 Feb

Bibliographical note

Funding Information:
The work was supported in part by the Korea Research Foundation (J03602), Hyundai-Kia Chaired Professor Fund (Korea University), and the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MOST) (No. R0A-2007-000-20053-0).


  • Confocal microscope
  • Nanowire
  • Photoluminescence
  • Poly(3,4-ethylenedioxythiophene)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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