標題: Synthesis and thermal and photoluminescence properties of liquid crystalline polyacetylenes containing 4-alkanyloxyphenyl trans-4-alkylcyclohexanoate side groups
作者: Ting, CH
Chen, JT
Hsu, CS
應用化學系
Department of Applied Chemistry
公開日期: 12-Feb-2002
摘要: Two series of polyacetylenes containing 4-alkanyloxyphenyl trans-4-n-alkylcyclohexanoate were synthesized using [Rh(nbd)Cl](2), MoCl5, and WCl6 as initiators. Polymers 1P-3P, which contain no flexible spacer, show no mesomorphic properties due to the rigid poly(phenylacetylene) backbone, Polymers 4P-9P, which contain three or four methylene units in their spacers, exhibit both SA and S, phases. X-ray diffraction diagrams reveal that the liquid crystalline polyacetylenes display an interdigitated bilayer structure for the smectic phases. Polymers 4P-9P are photoluminescent, and their emission wavelengths are about 500 rim. The photoluminescence intensity increased dramatically when a liquid crystalline polyacetylene was blended with poly(methyl methacrylate).
URI: http://dx.doi.org/10.1021/ma0107962
http://hdl.handle.net/11536/29014
ISSN: 0024-9297
DOI: 10.1021/ma0107962
期刊: MACROMOLECULES
Volume: 35
Issue: 4
起始頁: 1180
結束頁: 1189
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