Synthesis and Properties of New Side-Chain Liquid Crystalline Polymers by Metathesis Cyclopolymerization
Synthesis and Properties of New Side-Chain Liquid Crystalline Polymers by Metathesis Cyclopolymerization
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复分解环聚新型侧链液晶聚合物的合成及性能
DOI：
10.1021/ma00096a003
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发表时间：
1994
期刊：
影响因子：
5.5
通讯作者：
S. Choi
中科院分区：
文献类型：
--
作者：
Sang;Sunghyun Kim;W. Ahn;Hyun;S. Choi
以过渡金属为催化剂，通过复分解聚合制备了以聚二炔丙胺为主链的新型热致性侧链液晶聚合物。结果表明，MoCl 5 -EtAlCl 2催化体系对所研究单体的环化聚合是非常有效的。所得聚合物在普通有机溶剂中具有良好的溶解性，并可在玻璃板上浇铸成深棕色薄膜。单体和聚合物均表现出互变液晶性。未掺杂和I2掺杂的聚合物的室温电导率分别为10 - 11和10 - 3S/cm
New thermotropic side-chain liquid crystalline polymers containing a poly(dipropargylamine) backbone were prepared by metathesis polymerization with transition metal catalysts. It was found that the MoCl 5 -EtAlCl 2 catalyst system was very effective for the cyclopolymerization of the presently investigated monomers. The resulting polymers exhibited good solubility in common organic solvents and could be cast on glass plates to give dark-brown films. Both monomers and polymers displayed enantiotropic liquid crystallinity. The room temperaure conductivities of the undoped and I 2 -doped polymers were found to be about 10 -11 and 10 -3 S/cm, respectively