Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers

J. M C Redman, J. M. Giesler, W. R. Romanko, S. H. Carr, P. A. Depra, Tobin J Marks, H. O. Marcy, C. R. Kannewurf

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Strong, environmentally stable, electrically conductive fibers can be fabricated from solutions of nickel phthalocyanine (Ni(Pc)) and the ultra-high modulus polymers poly-(p-phenyleneterephthalamide) (PPTA, Kevlar) or poly-p-phenylenebenzobisthiazole) (PBT) by dry-jet, wet-spinning techniques, followed by chemical or electrochemical doping. The fiber mechanical strength s at a particular composition is a simple linear function of the Ni(Pc) I volume fraction Φc : s ≈ sp (1-Φc), where sp is the of a pure PPTA or PBT fiber. The electrical conductivity σ for Φc>0.17 obeys the empirical relationship: 1n(σ) = Φc1n(σc) + (1 - Φc) 1n(σp) where σc represents the conductivity of polycrystalline Ni(Pc)I and σp denotes the conductivity of pure PPTA or PBT. The temperature dependence of σ is thermally-activated and can be fit to a fluctuation-induced carrier tunnelling model. In contrast, the thermoelectric power S of the fibers is p-type and metal-like (S ∼ T), strongly resembling that of Ni(Pc) I single crystals. X-ray diffraction shows microstructural evidence for phase separation and the presence of a fine (domain size

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalSynthetic Metals
Volume29
Issue number2-3
DOIs
Publication statusPublished - Mar 21 1989

Fingerprint

Nickel
Charge transfer
Polymers
rods
nickel
microstructure
Microstructure
fibers
Fibers
polymers
wet spinning
Kevlar (trademark)
conductivity
Thermoelectric power
Phase separation
Strength of materials
Volume fraction
Metals
Doping (additives)
Single crystals

ASJC Scopus subject areas

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

Cite this

Redman, J. M. C., Giesler, J. M., Romanko, W. R., Carr, S. H., Depra, P. A., Marks, T. J., ... Kannewurf, C. R. (1989). Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers. Synthetic Metals, 29(2-3), 25-30. https://doi.org/10.1016/0379-6779(89)90874-6

Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers. / Redman, J. M C; Giesler, J. M.; Romanko, W. R.; Carr, S. H.; Depra, P. A.; Marks, Tobin J; Marcy, H. O.; Kannewurf, C. R.

In: Synthetic Metals, Vol. 29, No. 2-3, 21.03.1989, p. 25-30.

Research output: Contribution to journalArticle

Redman, JMC, Giesler, JM, Romanko, WR, Carr, SH, Depra, PA, Marks, TJ, Marcy, HO & Kannewurf, CR 1989, 'Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers', Synthetic Metals, vol. 29, no. 2-3, pp. 25-30. https://doi.org/10.1016/0379-6779(89)90874-6
Redman, J. M C ; Giesler, J. M. ; Romanko, W. R. ; Carr, S. H. ; Depra, P. A. ; Marks, Tobin J ; Marcy, H. O. ; Kannewurf, C. R. / Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers. In: Synthetic Metals. 1989 ; Vol. 29, No. 2-3. pp. 25-30.
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