Charge transport study of chemically synthesized polypyrroles soluble in organic solvents

Jinsoo Joo, Y. C. Chung, J. K. Lee, J. K. Hong, W. P. Lee, S. M. Long, A. J. Epstein, H. S. Woo, K. S. Jang, E. J. Oh

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report the results of temperature (T) dependence of dc conductivity (σdc), microwave dielectric constant, and EPR experiment for soluble polypyrrole (PPY) samples with different dopants (DBSA and NSA) prepared using various organic solvents (NMP, m-cresol, CHCl3, and DMSO). The three dimensional variable range hopping (VRH) model provides the best fit to the data, while the slope of σdc(T) varies with dopants and solvents used. σdc at room temperature is ∼ 0.2 - 0.01 S/cm and the localization length is estimated as ≤ 15 Å, which indicates the relatively strong localization of charge for these materials. We discuss the relation between the polarity of solvent and σdc(T). From EPR experiment, the density of states of the systems is estimated.

Original languageEnglish
Pages (from-to)831-832
Number of pages2
JournalSynthetic Metals
Volume84
Issue number1-3
Publication statusPublished - 1997 Jan 1

Fingerprint

polypyrroles
Polypyrroles
Organic solvents
Paramagnetic resonance
Charge transfer
Doping (additives)
Dimethyl Sulfoxide
cresols
Permittivity
Experiments
Microwaves
Temperature
polarity
permittivity
slopes
microwaves
conductivity
room temperature
polypyrrole
temperature

Keywords

  • Conductivity
  • Hall effect
  • Polypyrrole and derivatives
  • Solution processing
  • Transport measurements

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Joo, J., Chung, Y. C., Lee, J. K., Hong, J. K., Lee, W. P., Long, S. M., ... Oh, E. J. (1997). Charge transport study of chemically synthesized polypyrroles soluble in organic solvents. Synthetic Metals, 84(1-3), 831-832.

Charge transport study of chemically synthesized polypyrroles soluble in organic solvents. / Joo, Jinsoo; Chung, Y. C.; Lee, J. K.; Hong, J. K.; Lee, W. P.; Long, S. M.; Epstein, A. J.; Woo, H. S.; Jang, K. S.; Oh, E. J.

In: Synthetic Metals, Vol. 84, No. 1-3, 01.01.1997, p. 831-832.

Research output: Contribution to journalArticle

Joo, J, Chung, YC, Lee, JK, Hong, JK, Lee, WP, Long, SM, Epstein, AJ, Woo, HS, Jang, KS & Oh, EJ 1997, 'Charge transport study of chemically synthesized polypyrroles soluble in organic solvents', Synthetic Metals, vol. 84, no. 1-3, pp. 831-832.
Joo J, Chung YC, Lee JK, Hong JK, Lee WP, Long SM et al. Charge transport study of chemically synthesized polypyrroles soluble in organic solvents. Synthetic Metals. 1997 Jan 1;84(1-3):831-832.
Joo, Jinsoo ; Chung, Y. C. ; Lee, J. K. ; Hong, J. K. ; Lee, W. P. ; Long, S. M. ; Epstein, A. J. ; Woo, H. S. ; Jang, K. S. ; Oh, E. J. / Charge transport study of chemically synthesized polypyrroles soluble in organic solvents. In: Synthetic Metals. 1997 ; Vol. 84, No. 1-3. pp. 831-832.
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AU - Long, S. M.

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AB - We report the results of temperature (T) dependence of dc conductivity (σdc), microwave dielectric constant, and EPR experiment for soluble polypyrrole (PPY) samples with different dopants (DBSA and NSA) prepared using various organic solvents (NMP, m-cresol, CHCl3, and DMSO). The three dimensional variable range hopping (VRH) model provides the best fit to the data, while the slope of σdc(T) varies with dopants and solvents used. σdc at room temperature is ∼ 0.2 - 0.01 S/cm and the localization length is estimated as ≤ 15 Å, which indicates the relatively strong localization of charge for these materials. We discuss the relation between the polarity of solvent and σdc(T). From EPR experiment, the density of states of the systems is estimated.

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