The synthesis of a discotic side group liquid crystal polymer based on poly(methyl methacrylate) is reported. This involves the oxidative coupling of 3,3′,4,4′-tetrakis(hexyloxy)biphenyl with 1-hexyloxy-2-methoxybenzene to yield the unsymmetrical triphenylene nucleus, 2-methoxy-3,6,7,10,11-pentakis(hexyloxy)triphenylene. Subsequent demethylation followed by reactions first with 1,11-dibromoundecane and then with the potassium salt of methacrylic acid yielded the polymerisable monomer, 11-[3,6,7,10,11-pentakis(hexyloxy)-2-oxytriphenylene]undecyl methacrylate. This was polymerised in benzene using azoisobutyronitrile as the initiator. The thermal properties of the resulting polymer are described.
报道了一种基于聚(
甲基丙烯酸甲酯)的盘状侧基液晶聚合物的合成。这涉及到3,3′,4,4′-四己氧基
联苯与
1-己氧基-2-甲氧基苯的氧化偶联,生成不对称的三苯烯核2-甲氧基-3,6,7,10,11-五己氧基三苯烯。随后的去甲基化反应,先与
1,11-二溴十一烷反应,再与
丙烯酸钾盐反应,得到可聚合的单体11-[3,6,7,10,11-五己氧基-2-氧三苯烯]
十一烷基
甲基丙烯酸酯。该单体在苯中以偶氮
异丁腈作为
引发剂进行聚合。文中描述了所得聚合物的热性能。