Studies of polymers based on aromatic acetylene derivatives

Document Type

Article

Publication Date

1-1-1974

Abstract

Polymerization of phenylacetylene, α-ethinylnaphthalene, and 9-ethinylanthracene under various conditions showed that polymers with the same chain configuration (cis or trans) formed independently of the aromatic substitutent present as a function of the catalyst type. A cis-trans configuration was found to be specific for iron containing catalysts, rans-trans for nickel-containing. The crystallinities of the polyenes deoended on the main-chain structure. The polyacetylenes formed a globular structure regardless of the aromatic type of substituent present and were characterized by a fairly low electro-conductance, which is explained as due to the coil-shaped configuration, i.e. the specific steric position of the substituents relative to the plane of the double bonds. All the polyacetylenes studied had paramagnetic properties governed by the Curie rule, produced an ESR spectrum containing a single narrow line (symmetrical or asymmetrical) without any hyperfine structure. The type of aromatic substituent present did not affect the concentration of paramagnetic particles present in the polyenes. © 1974.

Publication Source (Journal or Book title)

Polymer Science U.S.S.R.

First Page

911

Last Page

924

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