Solution studies of the emeraldine oxidation state of polyaniline

Fulin Zuo, R. P. McCall, J. M. Ginder, M. G. Roe, J. M. Leng, A. J. Epstein, G. E. Asturias, S. P. Ermer, A. Ray, A. G. MacDiarmid

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Optical studies of emeraldine base in solutions show a red shift in both 2eV and 3.8eV absorption peaks compared with the optical absorption for emeraldine films and powders. As for solids, the 2.0eV peak is absent for the salt form. Unlike the salt film, the strong absorption peak is narrow without the free electron absorption tail, suggestive of strong localization of polarons in the solution form. Dilution studies show there is no shift in the absorption peaks with concentration in both emeraldine base and salt, indicating that optical absorption is an intrachain interaction. Temperature dependent UV-VIS spectra show the first thermochromatic effect in a system without side groups that suggests possible ring flipping. Photoinduced optical studies of emeraldine base polymer in solution shows photoinduced absorption peaks at 1.4eV and 3.0eV and photoinduced bleaching at 1.8eV. The photoinduced absorption peak observed at 0.9eV in film is no longer present. Its disappearance implies the importance of interchain interactions for the formation of the electronic state. In contrast, the 1.4eV absorption is from the interchain excitation of polarons.

Original languageEnglish (US)
Pages (from-to)445-450
Number of pages6
JournalSynthetic Metals
Volume29
Issue number1
DOIs
StatePublished - Mar 7 1989
Externally publishedYes

Fingerprint

Polyaniline
Polarons
Salts
Oxidation
Light absorption
oxidation
Electron absorption
Electronic states
Bleaching
Powders
polarons
Dilution
salts
Polymers
optical absorption
bleaching
polyaniline
red shift
free electrons
dilution

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Zuo, F., McCall, R. P., Ginder, J. M., Roe, M. G., Leng, J. M., Epstein, A. J., ... MacDiarmid, A. G. (1989). Solution studies of the emeraldine oxidation state of polyaniline. Synthetic Metals, 29(1), 445-450. https://doi.org/10.1016/0379-6779(89)90331-7

Solution studies of the emeraldine oxidation state of polyaniline. / Zuo, Fulin; McCall, R. P.; Ginder, J. M.; Roe, M. G.; Leng, J. M.; Epstein, A. J.; Asturias, G. E.; Ermer, S. P.; Ray, A.; MacDiarmid, A. G.

In: Synthetic Metals, Vol. 29, No. 1, 07.03.1989, p. 445-450.

Research output: Contribution to journalArticle

Zuo, F, McCall, RP, Ginder, JM, Roe, MG, Leng, JM, Epstein, AJ, Asturias, GE, Ermer, SP, Ray, A & MacDiarmid, AG 1989, 'Solution studies of the emeraldine oxidation state of polyaniline', Synthetic Metals, vol. 29, no. 1, pp. 445-450. https://doi.org/10.1016/0379-6779(89)90331-7
Zuo F, McCall RP, Ginder JM, Roe MG, Leng JM, Epstein AJ et al. Solution studies of the emeraldine oxidation state of polyaniline. Synthetic Metals. 1989 Mar 7;29(1):445-450. https://doi.org/10.1016/0379-6779(89)90331-7
Zuo, Fulin ; McCall, R. P. ; Ginder, J. M. ; Roe, M. G. ; Leng, J. M. ; Epstein, A. J. ; Asturias, G. E. ; Ermer, S. P. ; Ray, A. ; MacDiarmid, A. G. / Solution studies of the emeraldine oxidation state of polyaniline. In: Synthetic Metals. 1989 ; Vol. 29, No. 1. pp. 445-450.
@article{788034d334034e07b165c66299818638,
title = "Solution studies of the emeraldine oxidation state of polyaniline",
abstract = "Optical studies of emeraldine base in solutions show a red shift in both 2eV and 3.8eV absorption peaks compared with the optical absorption for emeraldine films and powders. As for solids, the 2.0eV peak is absent for the salt form. Unlike the salt film, the strong absorption peak is narrow without the free electron absorption tail, suggestive of strong localization of polarons in the solution form. Dilution studies show there is no shift in the absorption peaks with concentration in both emeraldine base and salt, indicating that optical absorption is an intrachain interaction. Temperature dependent UV-VIS spectra show the first thermochromatic effect in a system without side groups that suggests possible ring flipping. Photoinduced optical studies of emeraldine base polymer in solution shows photoinduced absorption peaks at 1.4eV and 3.0eV and photoinduced bleaching at 1.8eV. The photoinduced absorption peak observed at 0.9eV in film is no longer present. Its disappearance implies the importance of interchain interactions for the formation of the electronic state. In contrast, the 1.4eV absorption is from the interchain excitation of polarons.",
author = "Fulin Zuo and McCall, {R. P.} and Ginder, {J. M.} and Roe, {M. G.} and Leng, {J. M.} and Epstein, {A. J.} and Asturias, {G. E.} and Ermer, {S. P.} and A. Ray and MacDiarmid, {A. G.}",
year = "1989",
month = "3",
day = "7",
doi = "10.1016/0379-6779(89)90331-7",
language = "English (US)",
volume = "29",
pages = "445--450",
journal = "Synthetic Metals",
issn = "0379-6779",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Solution studies of the emeraldine oxidation state of polyaniline

AU - Zuo, Fulin

AU - McCall, R. P.

AU - Ginder, J. M.

AU - Roe, M. G.

AU - Leng, J. M.

AU - Epstein, A. J.

AU - Asturias, G. E.

AU - Ermer, S. P.

AU - Ray, A.

AU - MacDiarmid, A. G.

PY - 1989/3/7

Y1 - 1989/3/7

N2 - Optical studies of emeraldine base in solutions show a red shift in both 2eV and 3.8eV absorption peaks compared with the optical absorption for emeraldine films and powders. As for solids, the 2.0eV peak is absent for the salt form. Unlike the salt film, the strong absorption peak is narrow without the free electron absorption tail, suggestive of strong localization of polarons in the solution form. Dilution studies show there is no shift in the absorption peaks with concentration in both emeraldine base and salt, indicating that optical absorption is an intrachain interaction. Temperature dependent UV-VIS spectra show the first thermochromatic effect in a system without side groups that suggests possible ring flipping. Photoinduced optical studies of emeraldine base polymer in solution shows photoinduced absorption peaks at 1.4eV and 3.0eV and photoinduced bleaching at 1.8eV. The photoinduced absorption peak observed at 0.9eV in film is no longer present. Its disappearance implies the importance of interchain interactions for the formation of the electronic state. In contrast, the 1.4eV absorption is from the interchain excitation of polarons.

AB - Optical studies of emeraldine base in solutions show a red shift in both 2eV and 3.8eV absorption peaks compared with the optical absorption for emeraldine films and powders. As for solids, the 2.0eV peak is absent for the salt form. Unlike the salt film, the strong absorption peak is narrow without the free electron absorption tail, suggestive of strong localization of polarons in the solution form. Dilution studies show there is no shift in the absorption peaks with concentration in both emeraldine base and salt, indicating that optical absorption is an intrachain interaction. Temperature dependent UV-VIS spectra show the first thermochromatic effect in a system without side groups that suggests possible ring flipping. Photoinduced optical studies of emeraldine base polymer in solution shows photoinduced absorption peaks at 1.4eV and 3.0eV and photoinduced bleaching at 1.8eV. The photoinduced absorption peak observed at 0.9eV in film is no longer present. Its disappearance implies the importance of interchain interactions for the formation of the electronic state. In contrast, the 1.4eV absorption is from the interchain excitation of polarons.

UR - http://www.scopus.com/inward/record.url?scp=0024963627&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024963627&partnerID=8YFLogxK

U2 - 10.1016/0379-6779(89)90331-7

DO - 10.1016/0379-6779(89)90331-7

M3 - Article

AN - SCOPUS:0024963627

VL - 29

SP - 445

EP - 450

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1

ER -