Synthesis and hydrodynamic phase transition of mono-substituted polyacetylene containing an imide group
발표자
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초록
내용
The mono-substituted polyacetylene can obtain a polymer with high stereoregularity by using a rhodium-based transition metal catalyst. Previously, in our laboratory, the reversible phase transition could be adjusted by controlling the intramolecular hydrogen bonding of a mono-substituted poly(phenylacetylene) by temperature and solvents. In this study, a novel mono-substituted polyacetylene having an imide group in the side chain was synthesized and the phase change behavior by temperature and solvent was investigated. Unlike previous studies, we tried to observe phase transition and color change by controlling the dipole-dipole interaction of the imide group, not hydrogen bonding. By preparing a free-standing film, physical properties such as density, solubility parameter and FFV were measured, and UV absorption changes according to solvent and temperature were observed. In addition, the change of the secondary structure was confirmed through NMR spectroscopic analysis.