The giant-hexagon cylinder network--a liquid-crystalline organization formed by a T-shaped quaternary amphiphile.
The giant-hexagon cylinder network--a liquid-crystalline organization formed by a T-shaped quaternary amphiphile.
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DOI：
10.1002/anie.200703171
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发表时间：
2007-10
影响因子：
--
通讯作者：
M. Prehm;Feng Liu;U. Baumeister;X. Zeng;G. Ungar;C. Tschierske
中科院分区：
文献类型：
--
作者：
M. Prehm;Feng Liu;U. Baumeister;X. Zeng;G. Ungar;C. Tschierske
超分子化学旨在通过非共价分子间力相互作用的简单成分开发高度复杂的化学系统。 [1]该领域的主要目标是理解并最终控制印记在分子构造中的信息向超分子组装体的转移。[2, 3] 液晶 (LC) 相是相对简单的自组织结构，在热力学控制下自发形成，因此可以用作这些研究的模型系统。此外，这些材料的有序性和迁移性的结合是许多技术应用的基础，例如显示器、可调谐激光器和相位调制器。向列相、层状结构（近晶相）和柱的规则排列（柱状相）在过去主导了液晶研究。[4]然而，该领域最近的重大进展使得能够设计更复杂的自组织液晶系统。除了弯曲核分子 [5] 以及低聚和树枝状液晶超分子之外，[6] 还报道了三嵌段分子的复杂中间相，由棒状刚性联苯核心、末端两个极性氢键基团和非极性侧链组成（图 1）。 [7, 8] 这些分子形成蜂窝状圆柱阵列，具有 各种几何形状。非极性侧链组织成无限的柱，杆状单元在它们周围形成壳。联苯核末端的极性基团分离成
Supramolecular chemistry is aimed at developing highly complex chemical systems from simple components interacting through noncovalent intermolecular forces.[1] A prime objective in this field is to understand and eventually control the transfer of information, imprinted in the molecular tectons, to the supramolecular assemblies.[2, 3] Liquid-crystalline (LC) phases are relatively simple self-organized structures, formed spontaneously under thermodynamic control, and can therefore be used as model systems for these investigations. Moreover, the combination of order and mobility of these materials is the basis for numerous technical applications, such as, for example, displays, tunable lasers, and phase modulators. Nematic phases, layer-like structures (smectic phases), and regular arrangements of columns (columnar phases) have dominated liquid-crystal research in the past.[4]However, recent significant progress in this field has allowed the design of more complex self-organized LC systems. Besides bent-core molecules [5] and oligomeric and dendrimeric LC supermolecules,[6] complex mesophases have been reported for triblock molecules, composed of a rodlike rigid biphenyl core, two polar hydrogen-bonding groups at the termini, and a nonpolar lateral chain (Figure 1).[7, 8] These molecules form honeycomb cylinder arrays with a variety of geometries. The nonpolar lateral chains organize into infinite columns, and the rodlike units form shells around them. The polar groups at the ends of the biphenyl cores segregate into