Abstract
We report the synthesis of various substituted polyacetylenes including a novel poly(dinaphthylacetylene), poly{2-(2-ethylhexyloxy)-6-[2-(6-methoxynaphthyl-2-yl)ethynyl]naphthalene}, by the use of a WCl6–Ph4Sn catalyst system, and systematically investigate their solution properties. It is found that poly(diarylacetylene)s such as poly(dinaphthylacetylene)s and poly(diphenylacetylene)s exhibit a solution morphology between rod-like and semi-flexible, whereas the less bulky poly(phenylacetylene)s, poly(silylacetylene)s, and poly(tert-butylacetylene) exhibit a random coil morphology.
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Acknowledgments
We thank Dr. Masashi Shiotsuki (Kyoto University) for helpful discussion of polymer synthesis. This study was mainly supported by the Industrial Technology Research and Development Grant (09C46622a) from NEDO of JAPAN.
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Arakawa, Y., Furuya, H. & Konishi, Gi. Synthesis of a new poly(dinaphthylacetylene) and evaluation of its solution conformation. Polym. Bull. 70, 47–57 (2013). https://doi.org/10.1007/s00289-012-0819-6
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DOI: https://doi.org/10.1007/s00289-012-0819-6