Abstract
Seven novel types of acetylene monomers, 4-oxo-4-(prop-2-ynyloxy)butanoic acid ester derivatives (PSRs), having ester groups of 4′-substituted phenyl (PSPRs: –H=PSP; –CN=PSPCN; –OCH3=PSPOC1) or 4′-substituted biphenyl (PSBPRs: –H=PSBP; –CN=PSBPCN; –OCH3=PSBPOC1; –O(CH2)5CH3=PSBPOC6) as a pendant group were synthesized from 4-oxo-4-(prop-2-ynyloxy)butanoic acid (PS) with phenol derivatives and polymerized with a rhodium-catalyzed system. The structures and properties of the polymers were characterized and evaluated by nuclear magnetic resonance, infrared spectroscopy and gel permeation chromatography analyses. The polymerizations of the PSRs were carried out under nitrogen with Rh catalysts in tetrahydrofuran or toluene at 30 °C, producing a good yield of polymers. The resulting polymer showed a thermotropic mesophase as observed through polarized optical microscopy and differential scanning calorimetry.
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Mizuta, K., Hiraga, N., Koga, T. et al. Synthesis of side-chain liquid crystalline polyacetylenes bearing succinic acid spacer. Polym J 43, 141–146 (2011). https://doi.org/10.1038/pj.2010.120
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DOI: https://doi.org/10.1038/pj.2010.120
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Synthesis of chiral side-chain liquid crystalline polyacetylenes bearing succinic acid spacer
Polymer Bulletin (2012)
