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; T. J. Marks; H. O. Marcy; C. R. Kannewurf

doi:10.1016/0379-6779(89)90874-6

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, T. J. Marks, H. O. Marcy, C. R. Kannewurf

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

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 Φ_c : s ≈ s_p (1-Φ_c), where s_p is the of a pure PPTA or PBT fiber. The electrical conductivity σ for Φ_c>0.17 obeys the empirical relationship: 1n(σ) = Φ_c1n(σ_c) + (1 - Φ_c) 1n(σ_p) where σ_c represents the conductivity of polycrystalline Ni(Pc)I and σ_p 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 <50 nm) Ni(Pc) I dispersion embedded in the PPTA or PBT matrix.

Original language	English (US)
Pages (from-to)	25-30
Number of pages	6
Journal	Synthetic Metals
Volume	29
Issue number	2-3
DOIs	https://doi.org/10.1016/0379-6779(89)90874-6
State	Published - Mar 21 1989

ASJC Scopus subject areas

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

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10.1016/0379-6779(89)90874-6

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@article{0f805a99e5724df48279f43bb7bcb671,

title = "Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers",

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 <50 nm) Ni(Pc) I dispersion embedded in the PPTA or PBT matrix.",

author = "Redman, {J. M.C.} and Giesler, {J. M.} and Romanko, {W. R.} and Carr, {S. H.} and Depra, {P. A.} and Marks, {T. J.} and Marcy, {H. O.} and Kannewurf, {C. R.}",

note = "Funding Information: ACKNOWLEDGEMENTS The authors are indebted to the Office of Naval Research, the Air Force Office of Scientific Research (AFOSR-86-0105)oa nd the Northwestern Materials Research Center (NSF DMR 8520280) for generous support of this research.",

year = "1989",

month = mar,

day = "21",

doi = "10.1016/0379-6779(89)90874-6",

language = "English (US)",

volume = "29",

pages = "25--30",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier B.V.",

number = "2-3",

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TY - JOUR

T1 - Microstructure and charge transport in hybrid metallophthalocyanine/rigid rod polymer fibers

AU - Redman, J. M.C.

AU - Giesler, J. M.

AU - Romanko, W. R.

AU - Carr, S. H.

AU - Depra, P. A.

AU - Marks, T. J.

AU - Marcy, H. O.

AU - Kannewurf, C. R.

N1 - Funding Information: ACKNOWLEDGEMENTS The authors are indebted to the Office of Naval Research, the Air Force Office of Scientific Research (AFOSR-86-0105)oa nd the Northwestern Materials Research Center (NSF DMR 8520280) for generous support of this research.

PY - 1989/3/21

Y1 - 1989/3/21

N2 - 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 <50 nm) Ni(Pc) I dispersion embedded in the PPTA or PBT matrix.

AB - 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 <50 nm) Ni(Pc) I dispersion embedded in the PPTA or PBT matrix.

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U2 - 10.1016/0379-6779(89)90874-6

DO - 10.1016/0379-6779(89)90874-6

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SN - 0379-6779

VL - 29

SP - 25

EP - 30

JO - Synthetic Metals

JF - Synthetic Metals

IS - 2-3

ER -

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

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