Elsevier

Synthetic Metals

Volume 41, Issues 1–2, 30 April 1991, Pages 91-94
Synthetic Metals

Polymers: Polyacetylene
Infrared spectra of A Ti(O-n-Bu)4-AlEt3 catalyst and vibrational spectra of highly-conducting polyacetylene

https://doi.org/10.1016/0379-6779(91)91007-WGet rights and content

Abstract

A new method for measuring infrared spectra of a Ti(O-n-Bu)4-AlEt3 catalyst is developed. Upon heat treatment of the catalyst, formation of linear and/or cyclic oxo-complexes of titanium having the Ti-OTi linkage is suggested. The existence of oxo-complexes seems to be correlated with high electrical conductivity of resulting polyacetylene upon full iodine-doping. Raman spectra arising from doped domains have been obtained for the first time by Fourier transform Raman spectroscopy with 1064-nm excitation. Even at full iodine-doping, the polymer chain does not have a uniform bond order, and contains dope domains in which bond alternation persists. Small differences are observed between the Raman spectra of conventional and new highly-conducting polyacetylenes.

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