Light emission of a single strand of poly(3,4-ethylenedioxythiophene) (PEDOT) nanowire
- Authors
- Park, Dong Hyuk; Kim, Hyun Seung; Lee, Yong Baek; Ko, Jung Min; Lee, Jun-Young; Kim, Hyun-Jun; Kim, Dae-Chul; Kim, Jeongyong; Joo, Jinsoo
- Issue Date
- 2월-2008
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- poly(3,4-ethylenedioxythiophene); nanowire; photoluminescence; confocal microscope
- Citation
- SYNTHETIC METALS, v.158, no.3-4, pp.90 - 94
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 158
- Number
- 3-4
- Start Page
- 90
- End Page
- 94
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124176
- DOI
- 10.1016/j.synthmet.2007.12.018
- ISSN
- 0379-6779
- 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 pi-pi* 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. (c) 2008 Elsevier B.V. All rights reserved.
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