Journal ArticleDOI
Conducting Polymers: Halogen Doped Polyacetylene.
TLDR
In this article, the electrical conductivity of the halogen doped transpolyacetylene system, (CH)x, was studied in terms of a model of the doping process based on charge transfer.Abstract:
A study of the electrical conductivity of the halogen doped transpolyacetylene system, (CH)x, is reported. When films of trans‐ (CH)x are exposed to chlorine, bromine, or iodine vapor, uptake of halogen occurs; and the conductivity increases markedly, over eleven orders of magnitude in the case of iodine. The behavior of the halogenated polyacetylene is like that of a series of semiconductors with activation energies which vary with halogen content. The results are discussed in terms of a model of the doping process based on charge transfer.read more
Citations
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Journal ArticleDOI
Electrical Memory Characteristics of a Nondoped π-Conjugated Polymer Bearing Carbazole Moieties
Samdae Park,Taek Joon Lee,Dong Min Kim,Jin Chul Kim,Kyung-Tae Kim,Wonsang Kwon,Yong Gi Ko,Heungyeal Choi,Taihyun Chang,Moonhor Ree +9 more
TL;DR: The structure of this pi-conjugated polymer was found to vary with its thermal history; this change in structure can affect filament formation in the polymer film.
Journal ArticleDOI
Polymerization of acetylene by soluble Ziegler-Natta catalyst. Kinetic studies
TL;DR: In this article, a preliminary study on the kinetics and optimum conditions for the preparation of polyacetylene films are reported using the soluble Ti(OC4H9)4Al(C2H5)3 system, as well as the observation of the morphology of the films by electron microscopy.
Journal ArticleDOI
A Long-Lasting Polyacetylene Battery with High Energy Density
TL;DR: In this paper, an n-(CH)/LiClO4/p-(CH) battery (1.0 M LiClO 4 in propylene carbonate) prepared by passing 2.14 C (dopant concentration y=0.072) exhibited an open-circuit voltage of 3.5 V and an initial shortcircuit current of 28 mA ((CH)x electrode; ~4 mg).
Journal ArticleDOI
Nascent morphology of polyacetylene
Frank E. Karasz,James C. W. Chien,R. Galkiewicz,Gary E. Wnek,Alan J. Heeger,Alan G. MacDiarmid +5 more
TL;DR: In this article, the authors used a gold-grained electron microscope to determine the nascent morphology of polyacetylene and found that it is entirely fibrous with diameters of ∼5-40 nm with 20-nm fibrils.
Journal ArticleDOI
Staging in polyacetylene–iodine conductors
TL;DR: In this article, the authors present evidence for the existence of highly conducting polyacetylene complexes with structures related to high-stage graphite, as well as structure related to first stage graphite.
References
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Journal ArticleDOI
Electrical Conductivity in Doped Polyacetylene.
C. K. Chiang,C. R. Fincher,Yung Woo Park,Alan J. Heeger,H. Shirakawa,E. J. Louis,S. C. Gau,Alan G. MacDiarmid +7 more
TL;DR: In this paper, a metal-to-insulator transition at dopant concentrations near 1% was shown for polyacetylene, a new class of conducting polymers in which the electrical conductivity can be systematically and continuously varied over a range of eleven orders of magnitude.
Journal ArticleDOI
Hopping Conductivity in Disordered Systems
TL;DR: In this paper, the authors considered a model in which charge is transported via phonon-induced tunneling of electrons between localized states which are randomly distributed in energy and position, and obtained an electrical conductivity of the form
Journal ArticleDOI
Synthesis of highly conducting films of derivatives of polyacetylene, (CH)x
C. K. Chiang,M. A. Druy,S. C. Gau,A. J. Heeger,E. J. Louis,Alan G. MacDiarmid,Yung Woo Park,H. Shirakawa +7 more
Journal ArticleDOI
Thermal cis–trans isomerization and decomposition of polyacetylene
TL;DR: In this paper, thermal analysis and infrared spectroscopy of polyacetylene was used to investigate cis-trans isomerization, hydrogen migration accompanied with crosslinking reaction, and thermal decomposition.