Uv-Vis./NIR and transport studies of chemically synthesized soluble polypyrrole

E. J. Oh; K. S. Jang; J. S. Suh; H. Kim; K. H. Kim; C. H. Yo; Jinsoo Joo

Uv-Vis./NIR and transport studies of chemically synthesized soluble polypyrrole

E. J. Oh, K. S. Jang, J. S. Suh, H. Kim, K. H. Kim, C. H. Yo, Jinsoo Joo

Department of Physics

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20 Citations (Scopus)

Abstract

Doped polypyrrole which is soluble in various organic solvents (m-cresol, chloroform, DMSO, NMP etc.) is synthesized. Homogeneous solutions prepared from the solvents show different behaviors at near IR region depending on the solvent used. The results may be explained by PPy conformation change depending on polarity and aromatic interaction of solvents and dopants. Amorphous X-ray diffraction pattern is observed in flexible free standing films cast from these solutions. The electrical conductivity of the materials is 10^-2 ≃ 10⁰S/cm at room temperature. Temperature dependence of dc conductivity (δ_dc) indicates that these materials show the three dimensional variable range hopping (VRH) model and show the relatively strong localization of charge. From the EPR experiment of PPy-NSA (m-cresol) sample, the density of state of the system is estimated as ≃0.06 states/eV ring.

Original language	English
Pages (from-to)	147-148
Number of pages	2
Journal	Synthetic Metals
Volume	84
Issue number	1-3
Publication status	Published - 1997 Jan 1

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Keywords

Conductivity
Polypyrrole and derivatives
Solution processing
Transport measurements
UV-Vis-NIR absorption

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Materials Chemistry
Polymers and Plastics

Cite this

Oh, E. J., Jang, K. S., Suh, J. S., Kim, H., Kim, K. H., Yo, C. H., & Joo, J. (1997). Uv-Vis./NIR and transport studies of chemically synthesized soluble polypyrrole. Synthetic Metals, 84(1-3), 147-148.

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abstract = "Doped polypyrrole which is soluble in various organic solvents (m-cresol, chloroform, DMSO, NMP etc.) is synthesized. Homogeneous solutions prepared from the solvents show different behaviors at near IR region depending on the solvent used. The results may be explained by PPy conformation change depending on polarity and aromatic interaction of solvents and dopants. Amorphous X-ray diffraction pattern is observed in flexible free standing films cast from these solutions. The electrical conductivity of the materials is 10-2 ≃ 100S/cm at room temperature. Temperature dependence of dc conductivity (δdc) indicates that these materials show the three dimensional variable range hopping (VRH) model and show the relatively strong localization of charge. From the EPR experiment of PPy-NSA (m-cresol) sample, the density of state of the system is estimated as ≃0.06 states/eV ring.",

keywords = "Conductivity, Polypyrrole and derivatives, Solution processing, Transport measurements, UV-Vis-NIR absorption",

author = "Oh, {E. J.} and Jang, {K. S.} and Suh, {J. S.} and H. Kim and Kim, {K. H.} and Yo, {C. H.} and Jinsoo Joo",

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T1 - Uv-Vis./NIR and transport studies of chemically synthesized soluble polypyrrole

AU - Oh, E. J.

AU - Jang, K. S.

AU - Suh, J. S.

AU - Kim, H.

AU - Kim, K. H.

AU - Yo, C. H.

AU - Joo, Jinsoo

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Doped polypyrrole which is soluble in various organic solvents (m-cresol, chloroform, DMSO, NMP etc.) is synthesized. Homogeneous solutions prepared from the solvents show different behaviors at near IR region depending on the solvent used. The results may be explained by PPy conformation change depending on polarity and aromatic interaction of solvents and dopants. Amorphous X-ray diffraction pattern is observed in flexible free standing films cast from these solutions. The electrical conductivity of the materials is 10-2 ≃ 100S/cm at room temperature. Temperature dependence of dc conductivity (δdc) indicates that these materials show the three dimensional variable range hopping (VRH) model and show the relatively strong localization of charge. From the EPR experiment of PPy-NSA (m-cresol) sample, the density of state of the system is estimated as ≃0.06 states/eV ring.

AB - Doped polypyrrole which is soluble in various organic solvents (m-cresol, chloroform, DMSO, NMP etc.) is synthesized. Homogeneous solutions prepared from the solvents show different behaviors at near IR region depending on the solvent used. The results may be explained by PPy conformation change depending on polarity and aromatic interaction of solvents and dopants. Amorphous X-ray diffraction pattern is observed in flexible free standing films cast from these solutions. The electrical conductivity of the materials is 10-2 ≃ 100S/cm at room temperature. Temperature dependence of dc conductivity (δdc) indicates that these materials show the three dimensional variable range hopping (VRH) model and show the relatively strong localization of charge. From the EPR experiment of PPy-NSA (m-cresol) sample, the density of state of the system is estimated as ≃0.06 states/eV ring.

KW - Conductivity

KW - Polypyrrole and derivatives

KW - Solution processing

KW - Transport measurements

KW - UV-Vis-NIR absorption

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VL - 84

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JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

ER -

Uv-Vis./NIR and transport studies of chemically synthesized soluble polypyrrole

Abstract

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Keywords

ASJC Scopus subject areas

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