Electro-conductive properties of poly(3,4-ethylenedioxythiophene)/poly(ionic liquid) films with respect to its structure and morphology
- Authors
- Lee, Tae Hee; Kim, Tae Young; Duong, Ha Thi Thuy; Kim, Jong Eun; Suh, Kwang S.
- Issue Date
- 12월-2009
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Conducting polymers; Poly(3,4-ethylenedioxythiophene); Polymeric ionic liquids; Conductivity; Morphology; X-ray
- Citation
- SYNTHETIC METALS, v.159, no.23-24, pp.2453 - 2457
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 159
- Number
- 23-24
- Start Page
- 2453
- End Page
- 2457
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/118779
- DOI
- 10.1016/j.synthmet.2009.08.011
- ISSN
- 0379-6779
- Abstract
- Poly(3,4-ethylenedioxythiophene) (PEDOT)/poly(1-vinyl-3-ethylimidazolium(+) (trifluoromethane sulfonyl)imide(-)) (PIL) complexes were prepared at various PEDOT/PlL molar ratios and dispersed in propylene carbonate at a concentration of 1 wt%. After casting, the maximum conductivity was measured to be 1.2 x 10(-1) S/cm, which could be explained by the 3D variable range hopping model. The optimum surface roughness of the PEDOT/PIL film was measured, showing S-a and S-q values of 5.92 and 11.0 nm, respectively. The conductivity of the polymerized PEDOT without a template process had low conductivity due to its poor surface roughness and large particle size. Therefore, the conductivity of PEDOT/PILs is determined by the particle size, crystallinity and surface morphology. These results were supported by surface mapping microscopy, X-ray photon spectroscopy, and X-ray diffraction. (C) 2009 Elsevier B.V. All rights reserved.
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