Journal ArticleDOI
Thermal cis–trans isomerization and decomposition of polyacetylene
TLDR
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.Abstract:
Thermal cis-trans isomerization and decomposition of polyacetylene film prepared with a Ti(OC4H9)4–Al(C2H5)3 (Al/Ti = 4) system were investigated under inert gas or in vacuum by means of thermal analysis and infrared spectroscopy. Thermograms of differential thermal analysis of cis-polyacetylene revealed the existence of two exothermic peaks at 145 and 325°C and one endothermic peak at 420°C which were assigned to cis-trans isomerization, hydrogen migration accompanied with crosslinking reaction, and thermal decomposition, respectively. The isomerization was followed by infrared spectroscopy over the temperature range 75–115°C. The reaction did not obey simple kinetics. The apparent activation energy for the cis-trans isomerization was 17.0 kcal/mole for the polymer containing 88% cis configuration and increased with increasing trans content up to 38.8 kcal/mole for 80% trans content.read more
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Journal ArticleDOI
The Discovery of Polyacetylene Film: The Dawning of an Era of Conducting Polymers (Nobel Lecture)
TL;DR: This lecture is not directly related to the discovery and development of conducting polymers to which the Nobel Prize in Chemistry 2000 was awarded, but the previous work that was carried out just before the discovery of chemical doping is presented.
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Comparative theoretical study of the doping of conjugated polymers: Polarons in polyacetylene and polyparaphenylene
TL;DR: In this article, the physicochemical properties of all-trans polyacetylene and polyparaphenylene have been investigated in the framework of the adiabatic H\"uckel Hamiltonian with $\ensuremath{sigma}$-bond compressibility.
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Poly(1,6-heptadiyne)-Based Materials by Metathesis Polymerization.
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Conducting Polymers: Halogen Doped Polyacetylene.
TL;DR: 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.
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Electrical properties of polyacetylene/polysiloxane interface
TL;DR: In this article, the I•V and C•V measurements were used to explore the polyacetylene/polysiloxane interface electrical properties and the electrical conduction mechanism in this interface was found to be a Schottky-Richardson mechanism.