Self-Assembly-Induced Supramolecular Hexagonal Columnar Liquid Crystalline Phase Using Laterally Attached Nonmesogenic Templates
Self-Assembly-Induced Supramolecular Hexagonal Columnar Liquid Crystalline Phase Using Laterally Attached Nonmesogenic Templates
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DOI：
10.1021/ma991768a
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发表时间：
2000-07
期刊：
影响因子：
5.5
通讯作者：
Hui-lin Tu;X. Wan;Yu-xiang Liu;Xiaofang Chen;D. Zhang;Qifeng Zhou;Zhihao Shen;J. J. Ge-J.;Shi Jin-S
中科院分区：
文献类型：
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作者：
Hui-lin Tu;X. Wan;Yu-xiang Liu;Xiaofang Chen;D. Zhang;Qifeng Zhou;Zhihao Shen;J. J. Ge-J.;Shi Jin-S
通过自由基聚合，合成了一种新型聚对苯二甲酸二辛酯，该单体具有两个双燕尾4-庚基(Y形)基团的非介晶性模板。得到的聚合物由一个聚乙烯主链和主链上每两个碳原子上的2，5-双(4-庚氧基羰基)苯侧取代基组成。虽然主链和侧链模板都不表现出液晶(LC)行为，但它们相互耦合在一起，在聚合物中形成了尺度大于1.5 nm的超分子六方柱状LC相。因此，推测这种超分子液晶结构是通过骨架的螺旋排列与悬挂模板的协同组装而构建的。
A novel poly[di(4-heptyl) vinylterephthalate] has been synthesized based upon a free radical polymerzation from a newly designed monomer having a nonmesogenic template with two double-swallow-tailed 4-heptyl (Y-shaped) groups. The resulting polymer consists of a polyethylene backbone and a 2,5-bis(4-heptyloxycarbonyl)phenyl lateral substitutent on every second carbon atom of the backbone. Although neither the backbone nor the pendent template exhibits liquid crystalline (LC) behavior, they couple together to form a supramolecular hexagonal columnar LC phase on a scale of greater than 1.5 nm in the polymer. Therefore, it is deduced that this supramolecular LC structure is constructed via a cooperative assembly of a helical arrangement of the backbones with the pendent templates.