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)

    Abstract

    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
    Volume158
    Issue number3-4
    DOIs
    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).

    Keywords

    • 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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