Mesogen-jacketed Liquid Crystal Polymers With Mesogens of Aromatic Amide Structure

Synthesis and Characterization of A New Series of “Mesogen-Jacketed Liquid Crystal Polymers” Based on the Newly Synthesized Vinylterephthalic Acid

“…Similar to our previous MJLCPs based on 2-vinylhydroquinone 10 or 2-vinyl-1,4-phenylenediamine, these new polymers based on VTA are also noncrystalline. The DSC measurements from room temperature to 300 showed only a glass transition step but no endothermic peak correlative to any melting of crystals (Figure ).…”

“…The molecular weights are on the order of 10 4 . These results show once more that the large mesogenic substituent on one of the vinyl carbons does not eliminate the polymerizability of the monomers as found in other MJLCP systems. − Although no kinetic study has ever been carried out for this polymerization, the remarkable polymerizability is understandable by presuming a hindered chain termination as disclosed by Otsu et al for the polymerization of 1,2-disubstituted fumarates. 19…”

“…These results show once more that the large mesogenic substituent on one of the vinyl carbons does not eliminate the polymerizability of the monomers as found in other MJLCP systems. [10][11][12] Although no kinetic study has ever been carried out for this polymerization, the remarkable polymerizability is understandable by presuming a hindered chain termination as disclosed by Otsu et al for the polymerization of 1,2-disubstituted fumarates. 19 Similar to our previous MJLCPs based on 2-vinylhydroquinone 10 or 2-vinyl-1,4-phenylenediamine, 12 these new polymers based on VTA are also noncrystalline.…”

“…[10][11][12] Although no kinetic study has ever been carried out for this polymerization, the remarkable polymerizability is understandable by presuming a hindered chain termination as disclosed by Otsu et al for the polymerization of 1,2-disubstituted fumarates. 19 Similar to our previous MJLCPs based on 2-vinylhydroquinone 10 or 2-vinyl-1,4-phenylenediamine, 12 these new polymers based on VTA are also noncrystalline. The DSC measurements from room temperature to 300 showed only a glass transition step but no endothermic peak correlative to any melting of crystals (Figure 1).…”

Synthesis and Phase Structures of Mesogen-Jacketed Liquid Crystalline Polymers Containing 1,3,4-Oxadiazole Based Side Chains

“…Compared with those incorporated in the MJLCPs we synthesized before, − ,− the side chains based on the oxadiazole group possess more rigid and a straight mesogen core with stronger interaction, particularly the π−π interaction. In this context, the parallel packing of the mesogens shall be favored.…”