Spectroscopic properties of polyacetylenes synthesized via three modifications of Ziegler-Natta catalytic system

Results of spectroscopic measurements of three types of highly conducting polyacetylene are presented. A comparison is made of the traditional Shirakawa (or S-(CH) x ), Naarmann (or N-(CH) x ) and Tsukamoto (or v-(CH) x ) polyacetylenes. The non-conducting undoped materials have been characterized b...

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Bibliographic Details
Published in:Synthetic metals 1996-05, Vol.79 (3), p.183-188
Main Authors: Arbuckle, G.A., Buecheler, N.M., Hall, J.W., Valentine, K.G., Lefrant, S., Mevellec, J.Y., Mulazzi, E.
Format: Article
Language:English
Subjects:
Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polyacetylene
Properties and characterization
Spectroscopy
Ziegler-Natta catalyst
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Summary:Results of spectroscopic measurements of three types of highly conducting polyacetylene are presented. A comparison is made of the traditional Shirakawa (or S-(CH) x ), Naarmann (or N-(CH) x ) and Tsukamoto (or v-(CH) x ) polyacetylenes. The non-conducting undoped materials have been characterized by 13 C CPMAS NMR. FT-IR and resonance Raman scattering. A higher conductivity for iodine-doped N- (CH) x and v-(CH) x ) in comparison with S-(CH) x is observed even though a greater sp 3 content is found in N-(CH) x and v-(CH) x films. Since the sp 3 hybridized carbons may belong to catalyst residues, the sp 3 content does not correlate with conductivity. On the other hand, it is shown from the resonance Raman scattering data that a longer average conjugation length in N-(CH) x and v-(CH) x may correlate with the higher conductivities of the iodine-doped films.
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(96)80189-5