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.
| 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 |
Fingerprint
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
Uv-Vis./NIR and transport studies of chemically synthesized soluble polypyrrole. / Oh, E. J.; Jang, K. S.; Suh, J. S.; Kim, H.; Kim, K. H.; Yo, C. H.; Joo, Jinsoo.
In: Synthetic Metals, Vol. 84, No. 1-3, 01.01.1997, p. 147-148.Research output: Contribution to journal › Article
}
TY - JOUR
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
UR - http://www.scopus.com/inward/record.url?scp=0030704085&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030704085&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0030704085
VL - 84
SP - 147
EP - 148
JO - Synthetic Metals
JF - Synthetic Metals
SN - 0379-6779
IS - 1-3
ER -