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Insulated Polyacetylene Chains in an Inclusion Complex by Photopolymerization

Published online by Cambridge University Press:  18 May 2015

Steluţa A. Dincă ,
Damian G. Allis ,
Amanda F. Lashua ,
Michael B. Sponsler  and
Bruce S. Hudson
Steluţa A. Dincă
Affiliation:
Department of Chemistry, Syracuse University, Syracuse, NY 13244-4100, U.S.A
Damian G. Allis
Affiliation:
Department of Chemistry, Syracuse University, Syracuse, NY 13244-4100, U.S.A
Amanda F. Lashua
Affiliation:
Department of Chemistry, Syracuse University, Syracuse, NY 13244-4100, U.S.A
Michael B. Sponsler
Affiliation:
Department of Chemistry, Syracuse University, Syracuse, NY 13244-4100, U.S.A
Bruce S. Hudson
Affiliation:
Department of Chemistry, Syracuse University, Syracuse, NY 13244-4100, U.S.A
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Abstract

The properties of a material often depend on the degree of order of their atomic, molecular, or crystalline domain components. This is expected to be especially true for the case of polyacetylene, whose properties are highly anisotropic. For many applications, it may be necessary to have macroscopic order but not necessarily crystalline order. Having polyacetyelene chains fully extended and aligned parallel to each other may be sufficient for these applications even without order of the chains around their long axis. We report here progress in the use of an inclusion crystal containing a photo-reactive precursor to prepare high molecular weight polyacetylene. Raman spectroscopy was performed to probe the resulting conjugated polyene chains. Ultraviolet irradiation of a 1,4-diiodo-1,3-butadiene/urea inclusion complex results in the appearance of new resonance-enhanced Raman modes at 1125 and 1509 cm-1. The Raman spectra of the resulting confined polyene chains are very similar to freestanding isolated trans-polyacetylene prepared by solution methods.

Keywords

Raman spectroscopypolymerizationelectronic material
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1799: Symposium MM – Crystal Engineering―Design, New Materials and Applications , 2015 , pp. 7 - 12
Copyright
Copyright © Materials Research Society 2015 

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