Liquid-crystalline fork-like dendrons
Liquid-crystalline fork-like dendrons
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DOI：
10.1080/02678292.2017.1342147
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发表时间：
2017-06
期刊：
影响因子：
2.2
通讯作者：
Junya Uchida;Takashi Kato
中科院分区：
文献类型：
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作者：
Junya Uchida;Takashi Kato
摘要具有多个刚性棒状结构的树枝状分子通过与非介晶分子共价键合，可以诱导金属配合物、纳米粒子、富勒烯、π共轭分子等非介晶功能分子的液晶性。这些复杂的分子被称为超分子液晶。由于几个介晶部分的合作，这些树枝状分子表现出非常稳定的液晶（LC）相。我们已经使用具有两个或三个刚性杆部分的叉形LC树枝状分子来诱导功能分子如互锁分子和π共轭分子的液晶性。在这些叉状分子中，刚性杆核心通过柔性间隔基连接到苯基部分的3，4，5-位，并且这些分子通过1-位与功能分子键合。它们基本上形成近晶LC相，其诱导功能部分的层状排列。在这里，我们报告了一个新的家庭的叉状介晶含有氢键部分或离子基团。它们被设计用于构建超分子材料。图形摘要
ABSTRACT Dendritic molecules having several rigid-rod moieties can be applied to induce liquid crystallinity for a variety of non-mesomorphic functional molecules such as metal complexes, nanoparticles, fullerenes and π-conjugated molecules when these dendritic molecules are covalently bonded to those non-mesomorphic molecules. These complex molecules are called supermolecular liquid crystals. Due to the cooperation of several mesogenic moieties, these dendritic molecules exhibit very stable liquid-crystalline (LC) phases. We have used fork-shaped LC dendrons having two or three rigid-rod moieties to induce liquid crystallinity for functional molecules such as interlocked molecules and π-conjugated molecules. In these fork-like molecules, the rigid-rod cores are attached to the 3,4,5-position of the phenyl moieties through flexible spacer, and these molecules are bonded to functional molecules through the 1-position. They basically form smectic LC phases, which induce the layered arrangement of functional moieties. Here we report on a new family of fork-like mesogens containing a hydrogen bonding moiety or an ionic group. They are designed to build supramolecular materials. GRAPHICAL ABSTRACT